That's a lie. Those are the directions to the roof pool. What you're looking for is, if you're facing the lobby from the entrance, you want to go to your right for the mens room or to the left for the ladies room. If you're gender mixed, then just pick whichever is the cleanest!

Also, wanted to hijack this upper-post to say that this game is possibly the best tower defense available. Forget everything you know on your Android or iPhone apps, and forget all of those Warcraft 3 user maps - this is the real deal and tons of fun.