The ATX, feel free to move this post and your posts on this project to create a thread for it.
Site plan for the "17th Street Hotel" was posted to the AULCC page. No elevations, but it is being called a high rise hotel.
ftp://ftp.ci.austin.tx.us/ATD_AULCC/...el_PLAN_01.pdf
This notes that the gross square feet will be 134,904 square feet, which actually isn't very big. Based on that and the 8,712 square foot lot size that The ATX posted about, this would be at least 15 floors, maybe 16. No doubt a 200 footer, but not a very tall one depending on what kind of roof it has.