Belina’s apartment was very nice and cozy. The bedroom is very beautiful and bright, the bed is comfortable, though it might be problematic to climb the ladder if you have some problems with legs, or just too tall :) The living room is bright and beautiful as well, there are all kinds of appliances in the kitchen (except a kettle, but we just used a small pot to boil water).
The location is good, we almost never took the metro.
Anyway, we had a great time in Porto, and I would definitely recommend Belina’s apartment.