Some people seemed interested in going here and I've been in contact with the person who runs it and she said that she would open it up especially for us on one of the Sundays from one until three/three thirty, normally it is only open during weekdays.
So if you are interested it would be good to have a set Sunday date and a rough idea of numbers ahead of schedule rather than just two or three of us showing up, to in a sense make it more worth her giving up her free time to help us out, if you know what I mean. If the date and venue is good for you drop a comment here. Cheers.