Wow, you MUST choose this spot! Marcela and her husband are incredible hosts. They answer questions quickly, are flexible if you need them to be, and just fantastic people in general. Due to strange flight times we had to ask for some help for early check-in and late check-out. Marcela could have easily said no due to other guests coming in/out but she found a way.
In terms of the apartment, it's great! Beautiful and clean. The location is fantastic for a stay in BA. You're in walking distance to 75% of things you'll want to do. A taxi/uber would only be necessary for San Telmo, Boca, and Puerto Madero.
Already plotting my next visit to this BA and this apartment!