This is a very comfortable place for a large group visiting Florence. It's modern, recently renovated, and has everything to make a comfortable stay for two families. There are two master bedrooms with bathrooms (which can be rare in Europe), had a modern kitchen with dishwasher and a washer dryer. It also had air conditioning in every room which is so good in Florence! The balcony is so nice to lounge on with the synagogue in the background. It does have a lot of mosquitoes so beware if you get bit a lot (they did leave bug spray). There is a big dining room table that you can sit around which we used a lot but there is not a big living room area or a lot of lounge seating, only one couch. If you're not spending a lot of time there than its just fine.
There are also 4 flights of stairs so make sure everyone in your party can do stairs (there was a chair that came to the top so it may be possible to accommodate handicapped friends and family!)
Nice modern place that was very comfortable in a very safe area. We walked to everything and really enjoyed our visit.