I had a great stay at Ricardo's place, he was very polite and eager to offer tips for me to have the best Lisbon experience I can. Unfortunately my stay was very short so I could not fully enjoy the place, but I would totally recommend it for a longer vacation. The location is perfect, you are surrounded by amazing places to eat and Ricardo will suggest the best cheap family restaurants for you to have the best Portuguese style food you can get.
I got the "Great view room" and I was able to see Lisbon from above right out my window. The room was clean, I had an electrical heater to keep the place warm and the bed was super comfy.
Over all, I have nothing bad to say about the place. If you want a cheap stylish room in the center of Lisbon and to be welcomed by a polite and eager to help host, this is the place for you.