I stayed in Gabriela's stylish apartment for 3 weeks and enjoyed it more each day - which is unusual because normally the little things start wearing me down after a few days in a new place! It is in a spotlessly clean building with good security, friendly neighbors and good cable TV with lots of English speaking channels. The WiFi internet worked well but sometimes needed to be switched off and on at the wall to get a connection established - a task that took less than 2 minutes and so wasn't an issue for me. Marcelo was great and responded within minutes to any request I had - although there weren't many because everything was so well organized. We used Google Translate and WhatsApp to communicate and that worked perfectly.
Lots of people around till the early hours and a friendly policeman on almost every corner made walking around this area at any time feel very safe and there are DOZENS of really good restaurants and bars in a 5 minute radius of the front door. This is definetly going to become my base for futer BA trips.
Gracias Gabriela and Marcelo, you made my BA stay an absolute pleasure.