I loved TLL, and I went in the dead of winter when there was very little sunlight. Great place, great people and cheap (at least at the time). If you can, make sure to hit the garlic restaurant in the old town. I can't remember the name right now, but I'm sure anyone there can tel you. Pretty much everything on the menu has garlic (from the pre-dinner vodka to the after dinner coffee).

I flew to HEL then took a FinnComm flight to/from TLL.