I've been to this club plenty of times. When I visited Helsinki i spent the last 3 days of the year hear listening to my favorite band in the days of Helldone Festival. I rang in the new year here with great friends and my favorite band, doesn't get any better than that.
Staff is nice
There is an upstairs bar and 2 downstairs bars.
They do have a coat check that if I remember correctly is about 2 or 3 euros.
It's a pretty small venue/club so for the most part you have a great view of whoever you are seeing.
Which is also the biggest downfall, it's crazy hot in there when it's that packed. During new years eve we felt like sardines.
Once the front door opens you are walked in to show your ticket, then check in your coat then you are allowed to the area where the bar is at. There are two other large doors that lead to the actual club, but depending on the event they could be open or closed. Upstairs is usually VIP, which is great because you can sit and chill upstairs with the bar up there.
This is a staple in Helsinki when you are here and want to experience the awesomeness of Finnish music.
Happy yelping my amigos