The apartment is really nice. It is a small house with two floors. In the 1st floor there is the kitchen, living room and bathroom and on the 2nd floor there is the bedroom and another bathroom. Important to know: when you go up the stairs you are directly in the bedroom (no doors - except to the bathroom, of course).
The apartment is right in the center of Cascais and so everything is in walking distance. Check in (key box) and communication with the owner was smooth. Wifi was good.