We had a wonderful 5 days staying at Anna and Isabella's place. It's so peaceful and quiet you'd never know you were so close to so many of the main attractions - the front gate is directly across from an entrance to the Boboli Gardens and about a 5 minute walk to the Pitti Palace.
The place itself is well appointed and the beds were comfortable. The views of the garden outside of the bedrooms was very private and serene. The only downside is the location of the second bathroom being on the ground floor and not near any of the bedrooms - so there are a lot of stairs to go up and down if you are using that in the middle of the night for example.
Anna and Isabella were excellent with communication and were very flexible with us as we had last minute change of plans due to airport strikes and ended up arriving at midnight but they waited up for us no problem.