This is a FANTASTIC location, right next to the square! You can wake up each morning and have churros and coffee to start your day in the cafe right downstairs. You are also located very close to the Artisan market and the Antojito's market for some authentic eats. At night there are a couple of great restaurants for dinner and drinks (Corazon de Maguey and Los Danzantes in particular). The only downside of the location is some noise from the late-night activity and a strange preacher over loudspeakers at 6am Sunday morning (don't know if this is a regular thing). Not loud enough to keep you up, but noticeable. Was not an issue for us, but should be noted for light sleepers.
The BnB itself was clean, but only stocked with the bare essentials. You may have to go out and buy your own toilet paper (no biggie as there's a convenience store nearby as well).
Valentina was very quick with her responses, knew english, and was a great host! We had a late check-in that she accommodated for and check-out was also a smooth process.