Guido's apartment was exactly as pictured, but even bigger than I expected. The location was perfect - we walked everywhere we wanted to go. Guido was a great host. When we arrived he told us a bit about Florence and recommended some places to eat and where to get a drink with the locals. We requested some soap for the washing machine and he gladly gave us some from his apartment next door. Aside from that, we never saw Guido - which was perfect.
We stayed in the apartment in July / August so it was warm in Florence, but the air conditioner worked great - the apartment was nice and cool after a long day of walking around.
The bathroom was large, but the shower was a bit old. The shower curtain was far into the tub and would lay against me as I would shower.. but the shower itself worked fine.
All in all we loved the apartment. If we go back to Florence I would definitely stay here again.