Diogo, Bernardo and Francisco were great hosts. Really attentive at every moment. We even booked a transfer from the airport through them in advance although uber taxi are also pretty handy there.
The area was nice, very central and easy to get to anywhere in Lisbon. Many cafes and restaurants around
Flat was very nice, clean and all new.
Only drawbacks were mainly about the building where it is located as it is old, under refurbishment and big staircases (having no lifts is common in central lisbon) and the second bed is not really a double bed but a (comfortable) matress on the floor in a room without windows.
Overall, very pleasant stay. Would recommend it for sure.