We had a very nice stay at Facundo's listing. It is only a couple blocks away from lots of restaurants and transportation, easy enough to do with a small child. We initially found ourselves locked in and they were able to come and help us right away. The Christmas decorations were also very charming.
Not a detractor for us, but just a note that even though we had the entire place to ourselves, it is someone's personal residence, so just be aware there are personal effects throughout the house (photos, some food, etc.)