Outstanding location, price, amenities, check in process, check out process and thoughtful touches. (Fruits and Snacks, Espresso Machine with Espresso pods, washer/dryer with detergent etc...)
Walking distance to all major Florence museums/sights in addition to walking distance to the train/Bus. (We took a day trip to Sienna and just walked to/from the bus station)
Despite being so close to the major tourist attractions the street was quiet and could not be any safer as the police station is several doors down across the street.
Just as important the location was walking distance to our favorite Italian restaurants.