I have been there with one of my sisters, who is a member. It's a great place to meet and have a coffee before going to an exhibition or whatever. There is also food, though a much smaller choice than in the main restaurant. Also, although I am not a member, they let me in happily when I arrived first. ETA: Just reread your post, which must have been edited after I responded, and now I'm not sure whether I went to the old or the new members' room! Whichever, it was very pleasant!