First for the positives:
The location in relation to the city center and attractions was great.
The bed was fairly comfortable and had decent linens, besides a few stains.
There is a washer for cleaning clothes after a long day of walking and a small kitchen if you wanted to make something instead of going out.
Now for the negatives:
-1 star for location and noise. Every sound can be heard from the street below. Every footstep, conversation, and 4am club traffic due to the thin window panes. We could also hear everything the neighbors were doing. This accounted for little to no sleep each of the three nights we were in Florence.
-1 star for the shower. The temperature ranged back and forth without touching the knob and there was no consistent water pressure or setting. The shower head was also clogged and dirty.
-1 star for unexpected things. No paper towels, tissues, or first aid kit; there were three flights of stairs that were not mentioned in the listing (not a problem for us but would be for older people or those with disabilities); the only source of light in the bedroom was a ripped lamp, and the outlet on the far wall was pushed into the wall and was therefore unusable.
It is a decent enough place to rest after traveling, but non necessarily somewhere to sleep at night or get cleaned up.
Also be prepared to pay €50 for a cleaning fee at check-in. It is noted in the listing.