Austin is famed for it's music, food and nightlife...Sixth Street is a must see. There is also the Bob Bullock museum with history of Texas. Watching the bats (yes, bats) at dusk exit the Congress Street bridge on Lady Bird Lake is really cool but kindo of freaky too.

McKinney Falls is a great water spot. Barton Springs, and the Arboretum are beautiful... there is so much to do in the Austin area. Check this for local events https://www.austintexas.org/events/june-and-july/
Fredricksburg/Kerrville is a great place to visit not far from there. I would recommend those areas too. We do a lot of AirBNB for our personal travel because it just seems more laid back and relaxing than a hotel. If you prefer a hotel we've stayed at the Inn of the Hills hotel in Kerrville and it was nice. I will also say if you like antiqueing, Round Top is the place to do that... not sure you could haul it back with you easily though.

Good luck planning and safe travels to Summit!
Laura Jakubik, CAP, OM, PM
Executive Assistant to the Dean
Texas A&M College of Nursing