Quentin's place is really cute - it's the second floor of a small townhouse in a historic part of Lisbon. I spent most of my time wandering the streets and stairways of the district and enjoying what that part of the city had to offer.
The place is small, as it looks on the photos - but very well laid out so you don't feel cramped in. There's everything you might need to make your stay comfortable and check-in and check-out were super easy. Shutters keep out the sun so if you need to sleep in, you can remain in almost total darkness.
The wooden floors on the floor above creak a little when people walk up there, but not so much as to disturb you sleeping below. I was actually surprised at how peaceful the whole area was. The whole area is hilly - not a negative, but people with mobility issues should be aware before they book (this applies to Lisbon not just this apartment).