Zolilla is very well placed and close to the train station, metro and sights.
It is kept very clean and breakfast was always good.
The only thing I would say is to be careful with the stairs. There are 3 flights and if you are carrying big luggage it can be tricky, but the host was very helpful.
Also to note, there is building work which starts at 07.30am. If you're sightseeing and up early, not a problem but if you wanted a lie in, you may wish to take ear plugs.
All in all this was a positive experience and I would recommend.