This apartment on Via Dei Servi is a wonderful location. It's only about a three minute walk down to the Duomo and main Piazza. The neighborhood is safe and quiet. The apartment was very comfortable and very clean. The bed was exceptionally comfortable. The bathroom was recently renovated and the small kitchen was well stocked with basic supplies. Martina provided us with new water bottles,tea and croissants. The kitchen had a nice refrigerator and an electric kettle.
The only issue visitors should understand is that although this apartment is listed as being on the second floor, you must ascend 52 steps from the street level to get to the level of the apartment. In America, 13 steps is typical for one flight, so there is a bit of a climb. It wasn't an issue at all for me or my wife, but visitors with physical limitations should be aware of this.
Overall, this is a fine choice, a great value, and a great location for your exploration of Florence.