My husband and I stayed in this apartment for 3 nights in September 2014. Here are the pros and cons:
Pros: location is very central
Apartment was clean and has an updated kitchen and a good shower
Nuria was helpful and left the keys in the designated area
Bed was comfortable

Cons: elevator only works to alternate floors, so you have to take the elevator to the 4th floor and then walk down to the 3rd floor.
The apartment is very old and the floors are VERY VERY loud. I can't explain how much noise those wood floors make every time you step on them.
The apartment is located over a bar, so it is very loud at night. We had to close all windows in order to sleep, but it is warm in the summer months. If you are a light sleeper, this might not be the best location for you.
Living room area has minimal seating space, just a couch for barely 2 persons.