Gabriela's house is a very nice, quiet, peaceful, calm oasis in a trendy neighborhood with lots of great restaurants and bars. She has a full kitchen that is shared with all the guests (there are three rooms for rent in total, I think), but we never felt crowded or rushed. We didn't run into the other guests much at all. Everything runs very smoothly; there are some (reasonable) rules to follow, mostly to prevent bugs or damage to furniture, such as: don't eat in bed, or don't hang wet towels on the wooden cabinets.
Gabriela was a great host that I 100% recommend: very responsive, very flexible, and ready with a ton of helpful tips and information to enjoy and explore Buenos Aires.