Now, I have no idea what this song is about, but apparently it's ¥1,000 off. I still watched it through more than once. I'm embarrassed to say how many times. -via Everlasting Blort
Update: Daniel Kim has some information about this ad in the comments. -Thanks!
http://www.jalan.net/en/japan_hotels_ryokan/?cc=eng_banner
This seems to be a promotion for a hot springs resort (an 'onsen')
Buckets and the head towels are used in hot springs, but the resort would also have many food items and drinks as well as other entertainments.