Great place selected by my portuguese contact for a business meeting there. With the outstanding hospitality of Catia at the reception and all the reception staff, we were directed to the new edition villas accross the Golf course, offering a quite and modern environnment for our discussions. We could also enjoy the spa in the evening. Will certainly recommend this resort for vacation time. Warmer weather will give opportunity to enjoy the large outdoor swimming pool. Many thanks and good luck for the further development of this brand new resort ( April 2011)

This place is nearly there; it is top notch and 5 star in the truest sense on many counts; the design, the grounds, the look and feel of the place, the quality of the rooms - all outstanding. Also the staff, just about everybody we spoke to had excellent customer service skills and understood what delivering 5 star service really means. The location is pleasant and its probably a 8-10 minute drive to the centre of Cascais

I have to say though, if this hotel implements a few smaller things it will be right up there.

I would have like to have seen

- Some kind of ipod/Ipad dock in the room, there is no means to play music
- A hotel of this quality should have Nespresso machines. The room didnt have any provision for tea/coffee
- A bit of a grumble here; no complimenrary mineral water in the room. However for 8 Euros you can purchase a bottle of Hildon mineral water. This is naff on several counts; for a start it felt counter intuitive to see English mineral water in Portugal (I'm English, and there are an abundent number brands of mineral water native to Portugal that surely could be picked?) and secondly charging 8 Euros for it itsn't 5 star, its just an old fashioned a rip off.

Also breakfast is 'good enough' but not outstanding.

Please bear in mind my criticisms are relative to what I assume are the aims of the hotel, it is already 5 star, rightly so and my suggestions should be taken in that context.

If you're in this lovely area then stay here it is an exceptional place.

We spent 10 really perfekt daysat the Onyria Marina, beginning with the warm and professional service of the whole stuff. The situation of the hotel is as wonderfull for relaxing as well as for sightseeing.
The rooms are perfekt in every regard and the garden is amazing.
We will definetly return and will highly recommend this wonderfull place to our friends.

All starts with the warm and professional welcome from Monica and her colleagues at the Reception.
The Hotel is well situated, light, modern and well equipped.
The personnel are attentive, good humoured and smiling!
The Golf Course is impressive, difficult! and well maintained.
We will most certainly return