OceanOasis Hostel & Suites sits on Rua Alexandre Braga in town. Official: oceanoasishostel.com. Mixed dorms, private doubles and family rooms, breakfast included, and a rooftop terrace with city views for the evenings.
Naming trap: OceanOasis Residences Suites out at Pinheiros de Marim is a different aparthotel entirely, with a pool and parking. This review covers the town-centre hostel only.
Who fits
Backpackers, solo travellers, and friends splitting a cheap private room. Guests who see Olhão as a ferry-and-seafood base rather than a spa week.
Compared with
AL Casa Grande for shared-bath ultra budget. B&B HOTEL Olhão when you want modern chain privacy and parking.
Worth it?
Yes for a central budget roof with a terrace. Pin the hostel address, not the Marim residence.