The location and communication are excellent. We (3 of us) spent 4 nights at Julien´s place and to be honest it was a little disappointment after the nice pictures and comments.
The cleanness was superficial, and some tools (such as hair dryer, plugs, shower, boiler, kettle...) didn't work properly... plus we were unlucky cause in the nearby there was/is a construction so we woke up every day very early cause of those noises and in the evening the neighbours´ conversations kept us awake as the walls are super thin.
Anyhow we had a nice stay in Lisbon and I'm sure if Julien is going to improve on these things (and you bring some ear plugs :P) then the place will be super cool for the next guests!