Guido was right there waiting for us when we arrived. Upon checking in Guido walked us through a map of the city showing us the locations of the main sites and recommended a great sandwich shop for a quick lunch. He regularly checked in to make sure we had a pleasant stay.
Guido's apartment is right off on of the main areas in Florence. We were able to walk to everything we were seeing including the Duomo, Medici chapel, and across the Arno river to Michelangelo's plaza for an amazing view of the city.
The apartment was clean, comfortable, and cannot get much safer with the police department right across the street.
It is on the top floor with a lot of stairs which were a great warmup for long days of sightseeing. All of the neighbors we spoke to were friendly as well. There is a lift if you need it too.
This was in the middle of our 2 week trip so being able to do laundry really helped us to pack lighter. Guido provides a drying rack and detergent as well.
The street is a little noisy but with the windows closed you can hardly hear a thing, we did not have any trouble sleeping.

The apartment is spacious, perfect for 2 with a large bedroom, bathroom and kitchen.
I would definitely stay here again.