You might check out "Django's Moustache" a pretty great acoustic jazz trio-playing the obvious Django-fied sound. Usually some place in South Austin.
Too bad, as the Gourds are playing up in Dallas on the 28th....Kev Russell takes the mandolin to some pretty interesting places.
Check who is playing at these clubs, which are pretty reliable for good music (other folks can probably add to this)
Hole in the Wall
It's hard to go wrong music-wise.
Enjoy your stay.
Go to Barton Springs to cool off. (Don't miss it....)
Ever tried, ever failed, no matter. Try again, fail again, fail better.--Samuel Beckett