The room wasn't as accurate as the pictures and the description on the profile did not mention it was a shared flat with a few other people living there. We thought we were getting 2 separate beds for our selves and ended up sharing a bed ( I travelled with my male friend so this was awkward).
The paint above the bed was chipping off and had mold. The bathroom was small and wasn't very clean.
However, the host was lovely and did offer for us to stay at her villa in Cascais but we wanted to be close to the center of Lisbon so we declined that offer.
This is located in a busy area where lots of people go for food and drinks in the evening so it does get louder as the night goes on.
I guess if you're travelling alone and need a room with an ensuite to yourself then this is good.