Clubs and Venues for sarging in Budapest, Vienn, Prague and Amsterdam

Greetings everyone,
A couple of friends and I are traveling to Europe next week, so we could really use some help asap regarding suggestions on the best clubs, bars and places to go in these cities and find the HBs so we can practice our game and have a really good time.
I just posted a message on the main board suggesting the creation of a section with this kind of information, please check it out (and support it) if you think this could be a good idea.
If you could be interested in meeting up and maybe sarging together, let me know as well.
Cheers,
-Mercury-