Maria is a superlative host and her home is exactly as charming as it looks in the photos. As others have noted, lots of thoughtful amenities and the location is great. Maria was also kind enough to let me store some things while I traveled beyond Buenos Aires and had great recommendations. She really went above and beyond. A wonderful place to stay!
Just to note that part of the charm of the house is that you do have to go up two flights of stairs.