My wife and I thoroughly enjoyed our 3 night stay at Bill's place. It's located on a quiet residential street that's a 5 minute walk from lively So. Congress. The space is well-decorated and roomy enough for two, with a small kitchenette, comfortable couch and twin chairs and the most amazing, deep sleep-inducing bed ever!
Note, that there are about 15 steps to climb as soon as you enter and that the space is an open 'studio' arrangement (sliding pocket door gives the bathroom it's privacy), just so you know. Also note that access is via a 4-digit code and that Bill, the host, may or may not be around to greet you. In fact, we didn't actually meet him until the final day, after we'd checked out. No worries, though... we had terrific communication before and during the stay and he was kind enough to let us leave our luggage for a few extra hours between checkout and our departure time.
This was our first time in Austin (loved the city!) and we certainly want to return soon - and staying here again would be a priority!