When I used to travel in Europe I didn't have very much luck with the "Punter Boards", but I also didn't have a lot of time to put into them. I did have very good experiences in London and Holland:

https://www.eccie.net/showthread.php?t=770582
https://www.eccie.net/showthread.php?t=1134010

For the Marmalade Party in London I noticed the link doesn't work anymore so you may have to do some asking around - she may be going under a different name now. In Holland I had great luck asking the older local men where the good cookies are and they were spot on every time. Lots of fun to be had in the tourist areas (Amsterdam) but the super high quality experiences will be had where the locals go in my limited experience.

Good luck over there.

Max!