We enjoyed our stay at Ana's place. The place is located in the city center, walkable distance from most of the tourist attractions. There is a 24/7 market 1 minute away from the apartment. The street is a bit loud during weekend nights, but the apartment is well soundproofed, the noise is not disturbing.
Bonus: Just a few minutes away you have a great coffee shop and a nice restaurant with delicious food (Ana's recommendations)