Everything was perfect and we had a very nice time. Davide was a very nice person and it was easy to contact him. We had enough towels inside, and a lot of different sweets, cookies and small waffles. The internet connection was fast enough to stream Netflix, YouTube etc. and we had a fun time smoking inside there.
The only bad thing is the price. But that's Amsterdam. Everything is really expensive as a student, and if you just visit to smoke, you really think about taking a break of smoking. Hopefully legal in Germany soon haha