I booked Lorenzo's place for my bro and sister in low for 5 nights and here is their reflection on their stay:
The communications, check in and out all went smoothly. Lorenzo is very attentive and responsive. He provided us with all the info we needed for sightseeing, transportation, the nearby public laundry service etc.
The flat, in the heart of florence, is as its pictured, neat and clean. The private bathroom is located in a shared area, which wasn't an issue at all.
thanks Lorenzo