There are tremendous delicious things in Japan, and if you go to Tokyo, you can almost have any kinds of food. Of all of them, what I'd like to recommend is, go somewhere outside Tokyo, like Tohoku (northern east Honshu area), and experience eating local food there. Seafood and vegetables are so ...
Japan is considered as one of the safest countries! In fact, women often do go out late at night alone.
However, strange people are everywhere so pay normal level of attention such as avoid walking dark streets. I hope you will have a good time in Japan!
Kanesaka is one of the most famous sushi restaurant in Tokyo
I personally recommend Miyako in Shinjuku. It's in Hyatt Shinjuku.
My favorite is Ginzan Onsen in Yamagata. Ginzan onsen is a onsen district with old Japanese style buildings still stand on the side of the river. All ryokans have only limited numbers of rooms thus the district is fairly quiet. Some of the ryokans don't allow children to stay over. Ginzan onsen i...
Viewing Tokyo skyline at luxury bars is my best plan. Some of my recommendation is "Peter" in Penninsula Tokyo, "New York Bar" in Park Hyatt Tokyo. Especially at New York Bar, they play live jazz music which adds romantic mood.