Catarina is a very good communicator. She provides a map and detailed descriptions when you arrive. She also gives you a link to her Google maps, with lots of great suggestions.
The apartment is located at the edge of the historical center. It is shared with 2 other rooms. When I stayed, it was very hot. As there’s no AC in the room, you’ll have to open the windows. Since the apartment is right by quite a busy street, there’s quite some noise until a little after midnight. Not recommended if you’re a light sleeper. You will need to bring your own amenities, as none is provided.