I didn't have the opportunity to meet Kleber in person, but the communication with him was excellent; he is a great host. I arrived in Lisbon in the morning and he let me in way before the scheduled time; I really appreciated this check-in flexibility. The apartment is great, clean and everything was in place. It is central located, close to the public transport and pretty quiet. It is located on the 5th (last) floor of the building.
Recommended if you're not afraid of climbing a lot of stairs!