Along with CrossBeam, one of the first two maps made by Adam - and, while simple, perhaps the more playable of the pair. I think it is a good idea to start by making pretty basic maps, and with one rectangular room, it is hard to get more basic than this. The textures look good to me for this sort of place, there are weapons, some ammo, even an electroshield - and some targets on the wall, even, which I think do add interest to a place!
Again, a tiny download, so there is no reason not to get this map. It won't win prizes, and I doubt if it took very long to make, but with a couple of friends, you could certainly have a good battle here.