We really enjoyed our stay at Montse’s place. The apartment is in a great location -- a great neighborhood with a variety of local restaurants and businesses, and only a 5/10-minute walk to the city’s central (tourist) square. Would strongly recommend spending more time in the immediate neighborhood, as you'll get a good local vibe, and the food is much more affordable.
The neighborhood is very lively in the evenings, but the apartment is very well insulated from sound. The apartment was very clean and comfortable.
Montse provided many helpful recommendations.