The place is clearly more suitable for short stays than the long ones. Not enough light, the phone signal is not so good, the air is not so fresh because of lack of windows. There are also some usual things you need in case of long stays and there are missing.
Fron the other point of view, the house is situated in a good area, quite, chill and clean. Also lot of restaurants and shops. Very close to Cais do Sodre. The communication with the host is also very good.