Octant Douro — Hotel in Castelo de Paiva, Douro Valley

Octant Douro is a design hotel terraced in schist and glass into the south bank of the Douro river, at km 41 of the N222 road in Vista Alegre, in the parish of Raiva, municipality of Castelo de Paiva. It has 55 rooms and 6 suites — 61 units in total — all with abundant natural light, panoramic views, a flat-screen TV, free Wi-Fi and a bathroom with a free-standing tub. On Booking.com it is rated 9.5/10 ("Exceptional") by 1,055 verified guests, scoring 9.7 for staff, 9.6 for facilities and comfort and 9.5 for location, and it holds the Green Key (FEE) sustainability certification.

Location

The address is EN 222 (Estrada Nacional 222), km 41, 4550-631 Castelo de Paiva, at coordinates 41.0382 N / -8.3513 W, in Oliveira do Arda. The hotel has its own pier on the Douro and is served by the same N222 that runs upriver to Régua and Pinhão. The Raiva restaurant is about 15 metres from the entrance, O Cantinho Restaurante 1.8 km away and Adega a Ramadinha 3 km away. Praia da Lomba beach and the Marmoiral do Sobrado are around 8 km away, the Church of São Miguel de Entre-os-Rios and the Castelo de Paiva Vinho Verde fairground about 10 km, the Alpendorada Memorial 16 km and the Novelhos leisure park 18 km. Porto is roughly 40 km away and Francisco Sá Carneiro Airport about 55 km; the Spanish border is some 160 km away.

Facilities

• Three free swimming pools open all year: one heated indoor pool, one outdoor pool for all ages and one adults-only outdoor pool, with towels, loungers and umbrellas.
• Spa with a hydrotherapy circuit, sauna, Turkish bath, massages (including couples' massage), body and facial treatments, yoga classes and a relaxation lounge.
• Gym and swimming pool available 24 hours a day.
• Two restaurants, a bar, a snack bar, room service and breakfast in the room.
• Free private on-site parking with valet service and an electric-vehicle charging point; airport shuttle and car rental on request.
• Free Wi-Fi throughout, 24-hour front desk, concierge, lift and facilities for guests with reduced mobility.
• On-site activities: canoeing, water sports, fishing, hiking, pool table, games room, movie nights and a kids' club.

Rooms and rates

For one night from 16 to 17 September 2026, for two adults with buffet breakfast included (6% VAT not included), Booking.com listed: Double or Twin Room with Mountain View (38 m²) from EUR 474; Double Room with River View (38 m²) from EUR 521; Double Room with Balcony (47 m²) from EUR 595; Double Room with Terrace and River View (31 m²) from EUR 630; Deluxe Double Room with Balcony (49 m²) from EUR 925; and the Suite with Private Pool (145 m², with a living room, separate bedroom and two bathrooms) from EUR 1,775. Every room sleeps two adults and rates vary by date.

Restaurants

The hotel has two restaurants: À TERRA, serving international cuisine for lunch, dinner and high tea, and RAVA, serving Portuguese and local dishes at dinner. Both offer vegetarian options and RAVA also serves gluten-free and dairy-free dishes. The buffet breakfast is included in the rates and is rated 9.2 by guests.

House rules

Check-in is from 15:00 and check-out until 12:00; the minimum age for check-in is 18. Pets are allowed on request and charges may apply; pet bowls and pet baskets are provided. Children of all ages are welcome: a crib is free up to the age of 2, while an extra bed costs EUR 50 per child per night for ages 3-12 and EUR 100 per person per night from age 13. The spa opens from 10:00 to 18:30 on weekdays and from 10:00 to 20:00 at weekends, and children up to 12 may use the indoor pool between 9:00 and 16:00. Licence no. 3297.