We stayed at Cristina’s apartment for four nights and felt very comfortable and right at home. The ceiling frescoes are absolutely amazing and you will feel like you are in a renaissance palace. It is a very large apartment away from the crowds in the historic center, yet about a ten minute walk to the Duomo.
As in all parts of Florence, there are no screens on the windows, so you might get a few mosquitoes- we kept the windows closed. The apartment was cool even though it was in the high 80s outside. There are fans in any case.