For anyone interested, they do tours in several languages.

Additionally, the tours have two sections - the first half that everyone does, and then they offer you the choice of going back up, or going to the museum area; definitely worth spending the extra time (particularly as it seems few people actually do it, so you'll have a chance to actually speak with the guide in more depth).

I've been twice and would happily go again - couple years ago now, so maybe things have changed.

I really should curate my photos - I took hundreds :)