This flat was perfect for those who want to be central in the Sta. Cruz area. The unit itself is very comfortable, with enough room for four, easily. Being close to the restaurants was perfect for my parents, who are seniors and cannot walk too far.
The neighborhood is charming, with narrow streets perfect for wandering and exploring the little souvenir shops, tapas bars, and restaurants. And if you want a different experience, you only have to walk a few blocks to Centro, Alfalfa, the river, etc.
One thing to note: it does get a bit noisy, which is to be expected because of the nature of the neighborhood. You can hear people talking as they walk, as well as the church bells that ring every hour.
But if you don't mind a bit of noise and can chalk it up to a unique city experience, you'll be just fine. The proximity to all the sights and the charm of the neighborhood is worth it.