campground near 500 E Cesar Chavez St Austin TX

Lone Star is likely the closest but it's also likely the most expensive. The next closest would be Crestview which is associated with the Crestview RV dealership.

Pecan Grove on Barton Springs is probably the closest. Nothing fancy but a truely Austin experience!

Ok thank you

we just stayed at Oak Forrest

Lone Star is the closest. Crestview is iffish -- pretty crowded. If you can stand the drive, there are a number of very nice RV parks out 71 towards Bastrop, be it the newer ones like Lost Pines or ones that have a bit of character and a small ranch like Bastrop RV park.

Lone star is about $50 a night, but everything in Austin is hyper-inflated when it comes to lodging. Just make sure to get reservations. I'd probably go that route.

Lost Pines had a major fire in 2011, and while recovering it is a shadow of what it used to be.

You're getting a lot of good advice, and I've stayed in most of the parks listed - all good choices. But if your criteria is "closest to 500 East Caesar Chavez" (the Convention Center), Pecan grove is 1.6 miles. An easy drive even in rush hour traffic, and an easy walk along the river if you're able. I've done it several times. Catch the Congress Bridge bat flight some evening while you're there. You're also within walking distance of many restaurants, bars, shops, etc. An eclectic part of downtown Austin.