I highly recommend a stay at Rosario's place. They are amazing hosts and upon arrival we could discuss places to eat and to see with Rosario and José Maria. We also had precious little tips thanks to them !
For your stay, you will be in a room large enough if you visit the city all day long and it was all tidy and clean which is very appreciable.
Concerning the location, you are in a very dynamic neighborhood with lots of restaurants, interesting churches, supermarkets and everything.