Thank you all for the suggestions. I really really need them now.

Mouse, ChickPea i was thinking more a poor suburb area here (of course it is not decided). But the idea wih big mansion + more control of the water seems interesting. I need to set up the shore first, then think what would fit next to it. But i will pass opera/theatre.

Straf lets make an ice-hole then and fish . Ok seriously Straf, if you have any idea how to make our watermill better way please do share. Also the border runs in the middle of river so we have to decide who makes the building (if it is really gonna be above water)