I stayed in Diogo's flat for one night. I didn't stay there much, I was out exploring Lisbon. It was a nice place to stay for the time I was there, nice and clean, easily accessed by the metro and there was good communication from Diogo. I would recommend this as a great place to stay in a great location as long as you're not bothered by a bit of noise from the bar below, it wasn't that bad once the shutters were closed. I got to sleep pretty easily!