Great Apartment!
One should have no qualms about the excellent location of this rental.
Right smack between Piazza della Signoria and the Duomo, you are close to all the shops and sites in Florence City.
The biggest challenge is the lack of an elevator which makes heavy luggage hard work but otherwise it's a location that is absolutely brilliant.
The apartment itself is spacious and clean.
Kitchen is fully loaded
AC is strong (albeit in the bedrooms only but the whole house is still cool even in over 30deg daytime temps)
Water pressure is strong
Hot water is plentiful
Also of interest the front door locks like fort knox. ;)