This website started as a hobby to explain photography (posts listed here), but over time expanded to provide (hopefully) useful information about Japan and the Japanese language. I also run edonoyu.com with a friend—a site that covers onsen in the Tokyo region.
Tokyo’s most famous onsen is undoubtedly Oedo Onsen Monogatari in Odaiba. Its attraction is a combination of easy access, a multitude of services, and Edo-style amusement arcade designed with young people and foreigners in mind.