Stayed here in September and couldn't fault it, staff were polite and courteous, excellent facilities, if you can, have a suite, the extra space is worth it, pool area with bar is nice and peaceful if you don't like the beach which is only a short walk away. Plenty of restaurants nearby, recommend the Atlantico just on the corner, if you are a seafood lover, all in all an excelllent place to stay if you are on a short break, don't know if there is enough within walking distance if you wanted to stay longer to keep a family occupied, though Estoril and Cascais are only a short drive away.

We stayed 4 nights at this 4* hotel, sea view room. It was high season and we had to wait a bit for the room to be ready. This was not a problem as the hotel communicates with a very nice little mall. The hotel main areas are spacious and decorated with taste.
The room surface was fine with a big mirrored closet, safe and very clean. It offered the normal equipment for a 4* hotel: TV/Radio, good lighting, a little corner with 2 chairs & a table. The bathoroom was on the small side but with good mirrors, towels and toiletries. It also had a small balcony with 2 chairs. Room service also fine. Rooms on the pool side get less sun and could be a bit noisy.
Breakfast was very good: plenty of choice, good quality fruit, no rush and good service.
The pool is not big but the pool area has a nice lawn, plenty of sunbeds and sun all day. Snacks, salads, fruit, ice creams, drinks and lunch (between certain hrs) are also available.
It's a good place for families with children.
Within walking distance you have the big wide "Carcavelos" beach and a few good value restaurants.
The train station (linking Lisbon to Estoril & Cascais) is not far (but you need a taxi if carrying luggage).