It is an overall good apartment:)
The location is good, 200m away from the metros. You can walk to the river, or any other good spots but getting back could be not so easy because of the slopes in Porto.
Rose is a very friendly lady who's willing to help. We had some problem using the key (it is a very tricky one!), but she's patient and helped us.
The apartment is located in a quite old building like most part of Porto, so it is not very well equipped but is still clean and has everything you might need in daily life. The bathroom could be tight for many people.