Thomas A.
Yelp
I was actually quite pleased with the layout of the conference rooms, as I went for a job fair that had the exhibitors divided into rooms based on bacground (NGO, charity / corporate).
The building was really easy to find, though when people say Covent Garden, it's really closer to Holborn I think on the map, but regardless, a short walk from either.
I will say this though, the audio was terrible, some people kept making announcements on the PA and we couldn't understand what they were saying. But the set-up and facilities were all crisp and professional. Also, great location for some after-conference lunching.