We have stayed at Reno Hilton, Keystone (in Reno) and River's Edge (in Sparks, very close to Reno Hilton).
River's Edge is right on the Truckee River with a paved trail for hiking and biking. Clean restrooms and plenty of amentities. Local Casinos nearby, but you would have to drive to downtown Reno (6 miles) for the big name ones. Biggest drawback to River's Edge is that it is located right on the glide-path to the Reno Airport, so the scenery is ruined by the airplane noise.
Reno Hilton is a 'stand alone' Casino, meaning that there is not much else around it... you have to drive to see anything else. Near Truckee River. Parking lot camping, and the most expensive of the three.
Keystone is located downtown, parking lot camping, with all of the amenities. You can walk to the major casinos 3-5 blocks, and the Truckee River is about 9 blocks away (trail). A bit of freeway noise from I-80, depending on your site.
Never stayed at Chism's... older, smaller Rv park, mostly local permanent trailers, didn't appear (to us) to be that appealing(?)
Steve & Terri
19' Scamp 5th wheel