The place itself is lovely, but do not go there on weekdays, it is surrounded by construction. Crazy loud banging inside the building, chainsaws and hammering all day long from 8am-5pm. It was sooo hard to get any work done as a digital nomad. And the host was completely unsympathetic to the situation. I asked for a refund for the last few nights and he was completely unwilling.
I had to fight with air bnb to get to the right person who finally got me a refund, this was after Airbnb had denied me a refund. Moral of the story is, if you know you deserve a refund for noise pollution like this don’t give up till you get it. It made my stay in cascais very stressful.