This is a great place to stay! Close to everything in Georgetown, with easy access to buses into Washington itself. It was even walkable to the National Mall, if you like walking and have an hour and a half or so to spare for that.
It was great value, Alex and G were attentive but not obtrusive hosts, and the location couldn't be better. There was some street noise, but that is to be expected in a big city, and it wasn't a problem for me at all. The separate entrance was perfect, so I didn't feel as if I were intruding on my hosts. Check-in was easy as well.
This was my first Airbnb experience, and given how well it worked out, it certainly won't be my last. I would most definitely stay with Alex and G again.