I booked Tony's place for a bachelor party weekend and it was absolutely fantastic. Not only was the house clean, with plenty of room for everyone (we had 6 but it could probably fit double that), but Tony was unparalleled in his hospitality. Between sending me a huge list of ideas beforehand, to the binder he personally made of things to do in Austin broken down by neighborhood, we were never bored and always felt welcome. On top of that he is a pretty interesting guy to have a chat with (which is reflected in the stylish decoration of the house). Shelly, his 100 lb tortoise, was also pretty cool.
Austin is not necessarily a walkable city (at least in my short experience), but he has a few bikes that allowed us to go out for tacos. His location is also relatively close to stuff, so that if you do hire a ride service you won't pay too much.
I can't recommend Tony's place enough. The guy is a professional when it comes to being a host, and I appreciate him opening his home to us. I hope to stay there again in the future.