Octant Douro (ex Douro41 Hotel and Spa)  

Riverfront luxury hotel in Castelo de Paiva, Portugal, sitting on the Douro River at Estrada Nacional 222 Km 41, Vista Alegre. You're a short drive from the Hintze Ribeiro Disaster Memorial and Jardim de Torrão Park, with scenic riverside drives on tap.

Sixty-one guestrooms with minibars and LCD TVs, private bathrooms featuring separate tubs and showers plus bidets, and balconies that catch the river light. Rooms include safes, desks, hairdryers and cots on request—lean and luxe with practical touches for families and longer stays.

Sink into a full spa experience with sauna and Turkish bath, then cool off in the indoor and outdoor pools. There's a gym, 24-hour check-in, parking, laundry and accessible facilities. Expect lively bar and café spaces and an elevator for easy river-side access—wake up to fresh river-breeze mornings.

Complimentary Wi‑Fi throughout and in-room desks and phones to keep you connected.

On-site restaurant and a snack bar/deli serve breakfast and meals, supported by two bars/lounges. A complimentary buffet breakfast is served daily from 7:30 AM to noon, plus a daily reception to mingle before you head out.