This apartment is in an excellent location. Florence is a small and walkable city anyway, but the apartment is less than 5 minutes from Piazza della Signoria and the Uffizi Gallery and near the river.
There is no elevator, but the apartment is on the 1st floor, so just one flight of stairs. It is on a quiet street, so no noise issues even though it is a low floor.
The hosts were also responsive and very accommodating - even though we arrived very early, they let us enter the apartment and leave our luggage there, so we could start touring while the apartment was being cleaned.