My Place !!! as in Arboretum / Domain area which is NW Austin (Roads: 360/183/1=Mopac).
Make sure you stay in Travis Co: http://www.eccie.net/showthread.php?t=654993
Plenty of hotels in all categories and pretty safe.
... and there is shopping to leave the $$$ here in the local economy :-)
Really with your looks stay there and enjoy shopping dining and a nice hotel with amenities all within walking distance. They will come to you and its easy parking and location plenty of money in that area the 290/35 corridor is a clusterfuck. Let me know if you need a tour guide my office is close and I love to entertain. Welcome.
Oh wow! Welcome to Austin Miss South American Beauty. I agree with others...NW Austin area. Just not too far north, in other words -- stay out of Williamson County.