We were somewhat disappointed with this room although in the end it grew on us.
The building and apartment themselves are quite old, which is very charming but also comes with a powerful dank smell, especially in the stairwell, but also in the room, probably due to the adjoining interior courtyard. Unfortunately that courtyard is usually filled with hanging laundry so you will not able to enjoy it, but it will allow you to hear in perfect detail the daily life of the raucous Italian family that lives upstairs. Don't expect much peace.
In addition the bed linens and towels appear to be sourced from what has accumulated in the house over the last 30 years. They are outdated, mismatched, threadbare and a bit musty.
All that said, the apartment is clean and has everything you need. The bathroom is comfortable with new fixtures and shower. Federico is organized and quite available. He was very helpful when we needed to keep the room for an additional night due to a train worker's strike. And the location is pretty hard to beat, especially if you are getting to or leaving Florence by train, as it's a 10 minute walk from the station. Despite all the drawbacks, the place does have an old worldly, collegial charm to it. For the price, one could definitely do worse in Florence, but I'm betting we could have done better too.