I used this place for a BA flight to LHR, as an OneWorld Emerald member I got in for free with a guest, it is not very big but it wan't very crowded given my lounge stays at various BA contracted lounges for my trans-Atlantic flights. The bartender kept the drinks coming, the food was huh, and the BA service desk was only open for a very limited time.
The thing was that the bathroom was not inside the lounge so you have to walk out of the lounge and into a public bathroom. Wish there were more TVs as well because the one TV that I remembered was showing some boring news show.