Las Cruces was just a waypoint on our southwest trip, but it turned out to be a much better stop than we'd anticipated. The Hacienda RV Resort is an outstanding facility, clean, well-maintained, with spacious and level gravel sites that easily accommodate big rigs (ours was a 38' class A motorhome). The staff was very friendly, and while we didn't take advantage of the on-site amenities, they looked to be very nice.
The resort is in a much better location than you might think if you've never visited the area. Technically, it's located in Las Cruces, but in reality, it's a stone's throw (almost literally) from Mesilla, which is a fantastic little town with lots of interesting shops and restaurants that's well worth exploring. If you're just passing through, I'd recommend staying two nights here so you have a full day to sample what Mesilla has to offer.
Overall, this is among the best RV resorts we've visited.