The walking trail is probably covered under snow by December and it could be impossible to walk along it.The JR buses run around the year, however. But it is true that the hotel is closed from December.
I understand the boat service at Lake Towada is still open in December, is that true?
Only the round course that starts and ends in Yasumiya, but not the connection between Nenokuchi and Yasumiya.
I'm planning to stay 4 or 5 nights in Tohoku and want to do walking trips at secenic locations like lakes, streams, mountains, valleys, etc. Would be grateful for advice on where and how.
December is generally bad timing for walking in northern Japan. In the southern Tohoku region, in lower elevations and along the Pacific coast, there is less snow.