If you use Hotwire instead of Priceline, you will see an amenity list before you purchase. That will verify whether the property has a pool.
Also, check bookit.com, they have some nice dals for NOLA right now. It's the offseason (summers are hot) so it shouldn't be a problem finding something affordable.
That weekend is Satchmo Fest, over at the Mint at the far end of the Quarter. Lots of great jazz, and it's free. Check it out.