Irina, our host was really great and helpful in every way! If you are going to stay only 1 or 2 nights and only use the room, it's good enough. The room is good and the bathrooms and kitchen are clean. The living room and the dining area are small and with no windows, it's not a good place to "chill" as they say. We stayed for 1 month, and I would not recommend it if you intend to stay inside a lot.
Also, you should know that this place is run like a business (they own 6-8 apartments like this in Lisbon) and not like somebody's house. The host is just another employee and she is doing her best.