Gui's place was just as advertised, extremely clean, well designed and very comfortable. Gui was extremely responsive to my questions and accommodating to my needs. Unlike other reviewers, I found the bed to be really comfortable. It does feel firm when you first lay down but then the memory foam conforms to your body and I had the best night sleep.
The area is great. It isn't right in a touristy area, and it's a bit further from the monuments, but the neighbourhood is really cool and there are all the restaurants, shops and transport options you could need close by. I would definitely stay here on a future trip.