Cisela's place was good home base for a week in Cascais.
A couple things to note: there is no actual "heating" in the apartment. So if you go in winter, please be aware. Only the floors are heated, but when we were there 1/2 of the floor heating was not working, which we didn't learn until arrival. Thankfully, Cisela dropped off a portable heater that helped. So just pack socks and a jumper or cardigan for indoors and you'll be okay.
We were still able to enjoy the amazing terrace even in February, which is clearly the selling point of this place. The wifi works decently from the table, so working from there and having a view of the ocean and being able to sit in the sun is not bad ;).
The apartment could have been cleaned a little better, and the shower drainage could be better (water pools quite a bit). But all in all, its a safe, quiet, comfortable place to explore the beach town and is fine for short stays. It's about 15 minutes walking into the centre but you can get where you need to go by foot easily. It was even kind of nice to have a walk home at the end of the day. We had a lovely time!