Mariana is such a lovely person! Very helpful before the arrival with many tips how to get there and what to do when I was there. She gave me great recommendations about restaurants, events, public transportations, just everything. I felt very welcome at her place, even her dogs were always happy to see me coming back. The room has plenty of space and is very comfortable, even with an own bathroom which you don't have to share. The neighbourhood is also very quiet, you can safely walk around at night. I can only recommend to stay at Marianas place to have a great time in Buenos Aires.