Long Review Alert!!
We stayed at Sylvia's for couple of nights during our trip through different cities in Italy.
Its all about the location! Actually its only about the location. Unlike the description, the apartment does not have air conditioning in the bedroom; being on the top floor with step down bedroom with a noisy pedestal fan and linen curtains (!!) on the small window, the hot nights of our Florence leg of the trip was rather marred by the living conditions of our bedroom (we tried to improvise by keeping the Air Conditioning on for the living and kitchen, but it wasn't enough to beat the heat).
While the apartment has elevator to the top floor, there are two separate flights of steps to reach to the apartment (one of them spiral). So if you'll have heavy / chunky luggage, please plan accordingly. The other downside is the size of the loo! There is a reason that there was no photo of that in the profile.
I want to finish, however, on a positive note. Sylvia was accomodative with respect to our check in time (even agreed to allow us to keep our luggages before check in /during cleaning) and also recommended some restaurants. The location is fantastic for all touristy places around (including some of the best Florentine steak houses). There is Netflix if you want to enjoy a chilled beer while watching latest episode of 'the Designated Survivor' or something like that! The roof top terrace appeared nice, but we didn't get to use it (may be better during Autumn with little cooler weather).
If you are planning your stay during summer, pack lightly (mind the spiral staircase) and you may want to request Sylvia to install a AC in the bedroom or at least a portable air cooler (hopefully noise free) and change the curtains to a heavier one!!
Enjoy!