Decisions, decisions.

You guys, I need your advice!

My "problem" is this:

I applied for an Erasmus place in Norway. Twice. One application was with my own institute for Bergen, and the other one was with another institute in Tromsø.
I always said I'd rather go to Tromsø (though I'm not sure why). Today is the deadline and the institutes should tell you whether you get an Erasmus place or not, and now I got a yes for Bergen. Which is cool in and on itself, but it says I should write them whether I would accept immediately. And I haven't heard anything from Tromsø, and now I'm so unsure.
What should I do? Just say yes? Do I really want to go to Tromsø rather than Bergen? I guess Bergen is bigger and not as far away. *sighs*

Heeeelp! D:

If my English is wonky I apologize! I have spent the last days writing/reading almost exclusively in Norwegian... it shows. xD