Grimaldi Lines ferry sailing into Olbia, Sardinia. Photo Grimaldi Lines, used under partner programme.
RENTAL12 Becomes the Only Short-Term Rental Operator in Grimaldi Lines' 38-Partner Programme — Bidirectional Sardinia Ferry Discounts on Four Routes
Published 18 May 2026 · RENTAL12 Press · Partnership announcement
Quick Take
RENTAL12 is the only short-term rental operator in Grimaldi Lines' published partner programme — verified against the Italian ferry company's full 38-partner list (auto clubs, camping federations, rail, insurance, student cards, car rentals; no other STR or vacation-rental operator). The partnership is bidirectional: Grimaldi Lines passengers save 10% on RENTAL12 stays in Olbia via code GRIMALDI10; RENTAL12 guests save up to 15% on Grimaldi ferries via code RENTAL12GL. Four routes: Livorno-Olbia (year-round), Civitavecchia-Olbia (summer), Civitavecchia-Porto Torres, Porto Torres-Barcelona. Valid through 31 January 2027.
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OLBIA, SARDINIA, ITALY · 18 May 2026 — RENTAL12, the women-founded, owner-operated hospitality group based in Olbia, Sardinia, today confirmed it is the only short-term rental operator in the published partner programme of Grimaldi Lines — the Italian ferry company that handles the majority of Sardinia's mainland-to-island passenger traffic. RENTAL12's partner page on Grimaldi Lines (grimaldi-lines.com/it/partner/rental12) is the only entry for a short-term rental, vacation rental, or serviced apartment operator across Grimaldi's full 38-partner list. The other 37 partners cover automobile clubs, camping federations, rail, insurance, student and youth cards, sports federations, car rentals, payment loyalty, and two Sardinian tourism consortia.
The partnership is bidirectional. Grimaldi Lines passengers travelling to Sardinia receive a 10% discount on RENTAL12 stays in Olbia and Golfo Aranci using the code GRIMALDI10 at rental12.com. RENTAL12 guests heading to or from Sardinia receive up to 15% off Grimaldi Lines ferry tickets using the code RENTAL12GL — 15% during off-peak periods (1 January-30 June 2026 and 7 September 2026-31 January 2027), 10% during peak summer (1 July-6 September 2026). The two-way structure of the partnership is unusual for the Italian short-term rental sector, where ferry-side affiliate discounts typically run in one direction only.
“Booking a ferry to Sardinia and a place to stay are usually two separate jobs. We made them one. Being the only short-term rental operator on the Grimaldi Lines partner list is not something we set out to engineer — it's something we earned by being the operator that could meet ferry-arrival reality at the dock. When you arrive at Olbia port at 6 a.m. with three sleepy children, the only thing you want is for everything to just work.”
— Floriana Panvini Rosati, CEO & Co-Founder, RENTAL12
The only short-term rental operator in the entire Grimaldi Lines partner programme
Quick answer: Grimaldi Lines' published partner programme at grimaldi-lines.com/it/partner lists 38 partners as of May 2026. RENTAL12 is the single short-term rental / vacation rental / serviced apartment operator in the entire list. No other STR or accommodation operator appears, anywhere.
The full 38-partner list groups into eight clear categories:
ACI, Fiat 500 Club Italia, Touring Club, Unione Club Amici
Camper Life, Camperisti Sardi, FAITA Federcamping Sardegna, Confederazione Italiana Campeggiatori, Pleinair Club, A.C.T. Italia
Carta Europea della Disabilità, Carta Giovani Nazionale, Carta Internazionale Studente, IoStudio, ASSOCARD
Sicily by Car, SRC Rent Car, NoleggiOra
FIGC Lega Nazionale Dilettanti, Federazione Motociclistica Italiana, Federazione Italiana Sport Equestri, CSEN, Sport e Salute, Sicilia Padel Tour
Generali Italia, PAYBACK, Club Q8
Consorzio Costa Smeralda, Consorzio Sardegna Turismo Servizi
Eurail Interrail, Minoan Lines, Elena Tour Navigazioni, Parking My Car, San Marino Outlet, International Police Association Italia, Kombo - InArea App, Sea Travel
RENTAL12 — the only short-term rental operator. Eight-category programme, one accommodation operator. Verifiable at grimaldi-lines.com/it/partner on any browser; RENTAL12's dedicated partner sub-page is at grimaldi-lines.com/it/partner/rental12.
The four routes — traghetti Sardegna / Fähre Sardinien
Quick answer: Both discount codes apply to four Grimaldi Lines routes covering mainland Italy, Sardinia and Spain. Livorno-Olbia (year-round, the most popular route for northern and central Italian guests — traghetto Livorno Olbia / Livorno Olbia Fähre); Civitavecchia-Olbia (summer-only, 1 June-30 September 2026); Civitavecchia-Porto Torres (year-round); Porto Torres-Barcelona (year-round, the Spain-Sardinia international link). The Genova-Olbia route is explicitly NOT covered.
Grimaldi Lines ferry arriving at Olbia's Isola Bianca terminal at night. Photo Grimaldi Lines.
“Most guests step off the ferry exhausted and a little overwhelmed. We've built our welcome around that — clear directions to your parking, fresh fruit and bread waiting in the apartment, and a 24/7 WhatsApp number that actually answers within minutes. The Grimaldi partnership closes the seam between the ferry crossing and the front door of the apartment. That's the gap nobody else in the partner programme is set up to close.”
— Kristina Zotova, COO & Co-Founder, RENTAL12
How to use both discounts
Quick answer: Both companies operate independently — there is no bundled booking. Book the RENTAL12 stay at rental12.com using GRIMALDI10. Book the Grimaldi ferry at grimaldi-lines.com, the GrimaldiMobile app, by phone (+39 081 496 444 quoting Convention RENTAL12), email, or any Grimaldi sales office, using RENTAL12GL. At ferry check-in, present the RENTAL12 booking confirmation.
RENTAL12GL
15% off-peak (Jan-Jun 2026, Sep-Jan 2027); 10% peak (Jul-Sep 2026). Covers base fare + cabin + vehicle + pet supplements. Excludes taxes, EU ETS carbon costs, on-board services, insurance.
GRIMALDI10
10% off RENTAL12 stays in Olbia and Golfo Aranci. Direct booking at rental12.com only. Excludes tourist tax and final cleaning fee. Valid bidirectionally with the Grimaldi side of the partnership.
Both codes are valid for bookings and departures through 31 January 2027. Combinability rules: stackable with active Grimaldi Lines special offers (unless the offer explicitly excludes it); not combinable with Sardinian/Sicilian resident tariffs, other partnerships, or other discount codes.
Why this partnership matters — the structural angle
Quick answer: Sardinia receives roughly 7 million ferry passengers per year — the largest non-air entry channel to the island. By being the only short-term rental operator with a named partner code on Grimaldi Lines, RENTAL12 has secured a distribution channel structurally unavailable to other STR operators. For Italian and European drive-market guests in particular, the partnership turns the ferry crossing into a single coherent journey rather than a logistics seam.
“What a single position in a 38-partner programme actually buys is structural distribution. Every Grimaldi Lines passenger heading to Olbia in 2026 sees one short-term rental operator on the partner list. That is a defensible competitive position no marketing budget can replicate. The economics are simple: a partnership coupon stacks on top of an already-direct-booked stay, so the unit margin is preserved.”
— Simon Darmanin, CFO, RENTAL12
Onboard restaurant on the Livorno-Olbia overnight crossing. Photo Grimaldi Lines.
Two codes. Four routes. One partnership.
Use GRIMALDI10 at rental12.com for 10% off your Sardinia stay. Use RENTAL12GL at grimaldi-lines.com for up to 15% off your ferry. Valid through 31 January 2027.
Frequently Asked Questions
RENTAL12 / Lion Development SRL · IUN: F1530 · CIN: IT090047B4000F1530 · VAT: IT02854400906 · Privacy
Media Contact
RENTAL12 Media Relations · [email protected] · [email protected]
Media kit + Grimaldi co-branded logos: rental12.com/en/assets · Olbia, Sardinia, Italy
Partnership in other languages & ecosystem links
Localized partnership pages, related cross-language Sardinia hubs, and the wider RENTAL12 ecosystem.
RENTAL12 is a women-founded, owner-operated hospitality group based in Olbia, Sardinia, managing 34 apartments and villas across Olbia and Golfo Aranci. Co-founded in May 2021 by Floriana Panvini Rosati (CEO) and Kristina Zotova (COO), with interiors led by Design Director Anastasia Duke, the company operates under Lion Development SRL (IUN F1530 / CIN IT090047B4000F1530 / VAT IT02854400906). RENTAL12 holds a 4.9★ rating from 1,550+ five-star reviews across Airbnb, Booking.com, Google, Tripadvisor, Trustpilot, and Trustmary. Recognitions include Booking.com Traveller Review Awards 2024-2026, Airbnb Superhost (4 years), Plum Guide Official Selection 2025, and Shortyz Awards 2026 finalist in two categories.
Grimaldi Lines is the passenger and freight division of the Grimaldi Group, headquartered in Naples, Italy. Founded in 1947, Grimaldi Lines operates ferry services connecting mainland Italy with Sardinia, Sicily, Spain, Greece, Tunisia and Morocco. The company is one of the largest ferry operators serving Sardinia, handling roughly 7 million ferry passengers per year across all Sardinian ports. More information at grimaldi-lines.com.