A beautiful apartment in a lovely area of Lisbon! The room is lovely, and Kathrin is a great host - very helpful, providing a lot of information. The flat is very close to Bairro Alto but in a much quieter area, so you won't have flocks of drunken people under your window , but you will still find plenty of nice cafés and restaurants.
The only problem with the apartment is that it is quite noisy, and this might be a bit annoying for non-heavy sleepers like me: the ancient wooden floor, as beautiful as it is, cracks with every step taken by someone in the house. Moreover, the bathroom is just opposite the room, and doors are thin, so you can hear loud flushing from the room. When I was there, the other residents went up and down the corridor until late at night (one night, until 3 am) and starting early in the morning (as early as 5 am), pounding on the floor and slamming doors, so it was dififcult for me to fall or stay asleep. Earplugs are provided, but they do not work so much. But I guess for young people, going out at night til late and sleeping hard, this should not be a problem!