Very clean & nice looking.
And like in most bars in Russia, you can eat here; this place has great sushi. Really can recommend.
Kostomuksa Off The Beaten Path
Kostamus itself is an industrial town.
If you have time and a good car, take a road and drive to some Carelian village close to Kostamus.
We took a little longer way to Tiiksa, but I can recommend this because this road is better.