Oh how we miss you. We only had 4 days in Tallinn and somehow made Hell Hunt our local. Great food, service, and drinks. A place and people that deserves large tips simply to balance the value we recieved.
Most solid pub. No bachelor parties allowed (Estonian women will not put up with any fuss). Buy a round for the locals, or for a few of them anyway. They will appreciate it. Tip your waitress, she probably works harder than you do.
One of my favourite places to hit when I am in Tallinn which is only once every 3 or 4 years it seems. It's worth the walk uphill.