Carla's apartment is ideally located, next to the train station and a quick walk to many bars, restaurants, coffee shops and tourist attractions. The view from the apartment is gorgeous. Communication was super easy.
A few cons people may want to be aware of: internet is unfortunately not super reliable. It worked for me but would not work if you intend to work from there and need a consistent connection.
The walls are really thin, you'll hear everything that happens in the apartment below. Unfortunately I had a few rough nights because of that. I was awaken by someone snoring on the floor below, and a few days later by people staying up really late. They were not particularly loud but I could hear them like they were next to me. I don't think there's much Carla can do about that unfortunately.