We had a lovely stay at the 3rd floor apartment.
Pros - excellent location, central and close to public transport and all attractions. Stocked kitchen if you plan to cook a couple of meals. Very neat and spacious.
Cons- only access is through a narrow steep set of stairs - the apartment was on two levels as well. We have a lot of luggage making it fairly difficult to move up and down. Luggage size and ability to move up and down stairs is a critical constraint.
Overall, pack light and enjoy the lovely home!