The luxurious Westin on the Riverwalk is having a 55% off sale and it includes the 4th of July and Labor Day Weekend.
Travelzoo has the promo code. I just tried it in a test and it took me all the way except I didn't finalize it.
This is a beautiful hotel. They do charge for parking, but your getting a $200 plus reg. price room for 55% off. Can't beat it and you're on Riverwalk.
You can book all the way through Sept. , but you have to book before the deadline of June 15, 2012.
If you don't want to book online:
Call The Westin Riverwalk, San Antonio at 866-716-8137
Request rate plan TVZOO to receive this offer.