Oh conduit of the North

Just how many countries in the world would offer themselves up as hosts for a military meeting between the heads of the US and Russian armed forces?

I'm just wondering how this works. Would it be the Moscow or Washington making the call to the Finnish President's office.

What exactly do you say?

"Hi, look, we heard you might have an historic, 16th century manor, with has a Yellow Reception Room, Green Salon and Blue Coffee Salon, as well as lovingly manicured lawns for our security detail. Would it be possible to stop by on Wednesday to check it over?"