The apartment's location is very, very ideal: it is just a few minutes away around eveything in the downtown Lisbon! It is true that the place is a bit narrow but if you are looking just for a clean place to rest every night, the apartment ticks that box. The place is clean and provides the basic necessities: bed, towel, shower and toilet. You have been warned about the climb (it is on the fifth floor) so you will have to consider this.
Kleber is very responsive; we didnt have a problem contacting him. He is also a generous host- you can leave your things after checkout but before your flight so you do not have to worry about your luggages. You can do your laundry too.