We stayed 6 night in Fernando's apartment and had a fantastic time. The location is really convenient being only a short stroll to all the main sights and yet isn't too noisy at night. We didn't bother taking any photo's of the flat as the ones on his posting fairly reflect what you can expect. …..an eclectic set of art and comfortable place to come back to after climbing all those stairs! We ate out 4 nights but decided to stay in and use the great produce we had purchased during the day on two evenings……porcini mushrooms and an awesome mixture of tomatoes and cheeses.
We took the wifi option and it worked fine , if slow (typical in Europe we found), but decided to wait and see what the weather was like before deciding on the air conditioning. As it turned out we opened the windows when we got back in the afternoons and closed them at dusk to avoid mosquitoes…….worked fine. Electricity is expensive in Italy hence air con is very pricey so would suggest you also "suck it and see " before committing on that option…….bear in mind the appartment has very high ceilings and the bedroom is at mezzanine level. We would also note that the apartment is really suited to a couple , and one that can manage a tight spiral staircase to the bedroom.
Fernando was very helpful with tips (it was his suggestion that we went to Sienna whilst the floor was exposed in the Duomo there , and by bus rather than train).
So don't hesitate, book and enjoy…..we did . No regrets .