WC
I have never flown myself in Finland, but have spent much time there on business.
Personally I would not consider challenging the WX there in winter. It takes no prisoners.
You may encounter very olow temperatures (-37 is the worst I have experienced), strong winds, low cloudbase, whiteout etc etc and if you have to put her down 'in a field' (which you will not be able to see due snow, due to tech problems, your survival time without the proper kit will be measured in minutes rather than hours. Even in a car, we used to carry salopettes, warm jackets etc and we avoided frozen lakes for fear of finding a thin piece of ice.
Of course, the weather could also be severe VFR, in which case I imagine it would be as good as it ever gets, but the climate and environment are extreme.
The Finns are normally quite friendly, so you were unlucky if you found a rude person.
Me. I'd be on a Finnair flt, but if you go, I wish you the very best of conditions.