Hello Vixen, I would think you are going to be inundated with replies as many people have brought their pets over, I have friends who take them back and forwards to the u.k too.
We drove our 2 dogs over, took 5 days in the back of a van and they were fine, despite one of them being very nervous. We have found several very good vets in our area, who also speak English.
There is a Bulgarian breed ( I think) similar to a very small Pinscher, they all survive. As the houses are very efficiently heated, if you have your dog indoors there will be no problem.
Good luck, take the plunge.