Elena's apartment was a great place to stay right in the center of Florence. The apartment was clean and tidy and Elena and her husband are wonderful, helpful and responsive hosts. They arranged cabs for us to the airport and provided plenty of local tips and recommendations on where to eat. The apartment is chic and filled with hand crafted furniture and art pieces (all made by the hosts).
The only minor concern we had was over the stairs to the apartment. It sits atop an ancient tower (very cool) but the stairs are very steep and it is not particularly easy to carry up heavy luggage. Elena and her husband met us prior to check in to help us (without us asking!). Regardless, those looking to book should consider the stairs prior to booking.
I would certainly recommend this apartment for those looking for a fun place to stay in the heart of Florence.