Onyria Marinha Cascais, Vignette Collection by IHG in Cascais, Portugal has a corrected score of 4.0 ± 0.3 (fair evidence, 2 of 4 platforms), ranked 3 of 34 hotels we score in Cascais. Its platform ratings, normalised to 0-5, average 4.3 before correction: Booking.com 4.0, Tripadvisor 4.7.
Onyria Marinha Cascais is a 111-room hotel set in the Quinta da Marinha area of Cascais, Portugal, within grounds that include sea cliffs. It occupies a restored 19th-century palace and offers rooms and suites, two restaurants, a bar and ten event spaces. Guests can use outdoor pools, a spa with sauna, steam bath, hot tub and massage treatments, a fitness centre, a golf course, and tennis and racquetball courts, with cycling, hiking and fishing nearby and a playground for children. The hotel is well set up for meetings, weddings and other events, and suits travellers wanting a resort-style stay close to nature. Note that guest review scores vary between booking platforms, with one site rating it noticeably lower than others.
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No hotel can pay for placement or a better score. Scores rebuilt 2026-10-02.