Overall, Gisela's place was absolutely fantastic! It is oh so cute, perfect for a romantic weekend in Portugal! By far the best part was the location: It is mere steps from anything you might want to do in Porto. The only time we took transit was to get in to town from the airport and back; we walked everywhere else. Gisela herself was an excellent host, and was sure to consistently ask if everything was ok. She even worked with us so that we could store our luggage in the apartment building after we had checked out.
There was literally only one downside of Gisela's place: The bed. It was so uncomfortable that we ended up sleeping on the sleeper sofa, which was actually quire comfortable. Since we were only staying for one night, it was not the end of the world, but it would have presented an issue if we had decided to stay multiple nights.