We had a great stay at Carla's apartment , room was clean and big, quite hot during the day but we weren't in during the day so it was not an issue.
Carla is a great host and she did her best to help us get our bearings in Florence as we were first time visitors. She gave us direction for the best places to eat and had a map with all the attraction points. She does not speak English but these days there are enough phone apps to help with that.
Overall a great experience.