If you wanna stay in the historical center (which I recommend if you're interested in the most famous sights), don't look any further, this place is perfect.
Located in a traditional house towards a quiet backyard, you're really close (few minutes walk) to all the sights, nevertheless it's really peaceful and calm there.
Andres is a very nice host, he was always asking if he could improve things or if I need anything.
The apartment has some nice details, like a vinyl record player and some old discs, really vintage. :-)
I used the apartment as a digital nomad to work from there for 2 weeks. Internet is fast (50 MBit) and stable, electricity was there 100% of the time.
The kitchen has all equipment, hot shower is working perfectly.
Recommended!