I know this is an old thread, but just in case those of you are researching for a weekend trip to Balmorhea....
Do not stay at the park motel. Yes, it's a convenient location...it's also over-priced for a run-down room. Stay at the El Oso Flojo Lodge instead. It's only 4 miles down the road and it has a great Mexican restaurant next door.
The park motel rooms have cable TV, an old TV, and you can pay extra for a kitchenette (mini-fridge and 2-burner stove). No place to eat other than the restaurant 4 miles away. Get the picture?