I first went to Nozawa Onsen 10 years ago. It was a popular resort with Japanese of course, as one of those classic ski+onsen places, and there were some foreigners around. But nothing like now.
Lots and lots and lots of non-Japanese around now and lots of languages to be heard being spoken. Being a foreigner myself, I of course am part of that, but I can't help feel that some of the charm I felt before has gone.