As is the case with most antique/second hand stores, this one is hit and miss - but I have had mostly "hit" good luck for the items I have been looking for. It is a very large space with many many vendors. Some are better than others and some are for a very specific audience, for example last time I visited there was one room devoted to records:) Not my thing, but definitely somebodies!
The staff is very friendly, and usually easy to find to ask questions or unload your hands to find more treasures. The restrooms are large and easy access and the parking lot is HUGE!
All in all, if you are treasure hunting, this is a good place to hunt:)