The place is exactly as described, a fully equipped smallish, and very functional one bedroom apartment on the second floor. The best thing about this place is the location. It is about 100m from the main center of Cascais, tucked away on a quiet, very picturesque, narrow alleyway. There was a bit of occasional street noise at night (voices, but not traffic) as can be expected for this very central location (note I had the windows open as this was summer). This was not a problem at all -- just turned on a handy fan they have in the bedroom to drown it out. Everything in the center of Cascais, including the beach, is within easy walking distance from here. There is a train station nearby, I am guessing about 500m, that takes you into Lisbon. Cascais itself is a beautiful village well worth visiting.
The place itself is very nice and cozy. Corner bedroom has a double bed, and is separated by the main living area by drapes hanging at the doorway into the room. The living room has a fouton+trundle bed combination, so two single beds. The kitchen is small but fully equipped, and the bathroom is of good size. Finally there is a very nice outside balcony. This is a second floor with no elevator access, for those for whom this may be important.
Highly recommended!