At our lovely first meetup (four people came, if I count myself), I unfortunately forgot to take the opportunity to sort out when a good time for the next meetup would be. Sorry!
Since I'm about to be away for a while and I think others are leaving for the summer as well, I decided to just be bold once more and announce a time and hope that somebody else is free as well. But to make it easier to find good times in the future, please join the Google Group I've just created!
Last time, we ended up sitting in the cafe for hours without consuming much, so for this meetup I've booked the dining room at the student house where I live, which should be a quiet and comfortable place to talk. I'll also put up a LessWrong sign outside saying this, but please ring the buzzer marked "Basement", or you can call me at +43-660-1461996 (unfortunately I don't have a UK mobile yet, but if you ring just once, I'll come up and meet you).
Time & date is Sunday, the 16th of June, starting at 3pm. Hope that I didn't pick a terrible time and someone will be able to join me! :-)