I highly recommend this apartment! It is located just across the street from a metro/train station, so we had easy access to the city/sightseeing. As listed there is no air conditioning, but a good fa. Consider bringing earplugs if you are a light sleeper because you will likely need to keep the window open to stay cool. The apartment is above a restaurant and the garbage truck comes through very early in the morning. The square in front of the apartment is overall pretty quiet, though.
The common spaces (kitchen and bathroom) were cleaned daily and the entire apartment was well taken care of. The room was exactly what we expected based on the pictures provided.
Adriana was a wonderful host. She checked in with us throughout our week-long stay and offered suggestions of places to eat and things to do in Lisbon. She was very responsive and we had no issues getting in touch with her.