I stayed here for 1 week with my partner. Mercedes was a good host, really quick and easy to communicate with. The apartment nice and clean, but very small. The location was perfect if you wish to be right in the centre and access everywhere by foot, parking is definitely not possible near the apartment. We ended up parking 10-15mins away and paying a lot for it.
The only thing I would say is that it the apartment too small for 2 people. There wasn't much room to relax, only the small kitchen table and the bed. The bed was also unfortunately very uncomfortable, you could really feel the springs in the mattress and for 2 people we didn't sleep well in it. I am sure, 1 person would be ok. The hot water also only lasted for 1 shower, so it was a bit cold showering there mid winter. The heating system also turned off regularly (Mercedes was very quick to reset it) but it was also a bit annoying. All in all, nice place but best for a solo person.