I was living there for two months and I totally recommend staying at. Mercedes and her daughter are very pleasant hosts who helped me whenever I needed something. Their dog is very lovely too. The place is well connected with various bus lines and one subte line (H) 1 minute away and two more lines (A, D) ca. 5 minutes by foot. You can even walk in the microcentro as it is only 30 minutes by foot. You can find a lot of supermarkets, banks, restaurants and other stores nearby. The room is clean and has everything you need including a comfortable bed and a well working fan that can be very helpful during the summer in BA ;)
Thank you both for everything! I had a great time! :)