Cristal? Hmmm....i lived near but ive never tried eat there... In fact i dont know where is good traditional polish food but i can recommend u 'Anker' in Gdynia, i think its the best place to eat.
If u like vegetarian food 'greenway' is also good.
I dont know Bubba's taste but my is realy satisfied:) I always thought its food for rubbits but once i tried and know usually having dinner in 'Greenway':)