We surely recommend the Chadio loft of Pedro, Antonio and Luis.
It's exactly like on the pictures, the location is excellent ( close to the tram, metro and train station ), a supermarket at the corner of the street, nice view, very calm, a very handy list with addresses to eat and drink, a map, very well received by Antonio, and the team even left a bottle of wine in the fridge for our arrival.

If we return to Lisbon, we surely contact them again. Thank you guys!