You can spend half hour at Mount Bonnell loving over the river (Mt. Bonnell Rd, Austin, TX 78731). Another half hour nearby at a tiny "Mayfield Park" which has a lot of peacocks (3505 W 35th St,Austin, TX 78704 ).
If you are not picky, you can eat at "Asia Cafe" at intersection of Spicewood Spring Rd. and 183 (shopping center where BIG LOTS is).Or you can drive to china town center at 10901 North Lamar, Austin, TX 78753 which has more options.