1.About language Your English is so sophisticated but ordinary Japanese can't understand your level's English. So you may need to use plane , simple English especially in rural area. Like "I 'm hungry." not like ”I have a good appetite." In A hotel of a big city,there are multi-language speakers so you can use Chinese or English. 2.advice I'm worry about if you feel llonely when you trveling alone. So , I recomend some kind of workshop making learning traditional things. You can serch the word "外国人向けワークショップ" https://www.artscouncil-tokyo.jp/ja/what-we-do/creation/festivals/traditional-experience/2134/ http://yasuneko.jp/06workshop.html https://matcha-jp.com/jp/2012 http://find-travel.jp/article/49371 3.recommendation *You can choose snow area or worm area. You can play sky, if you like. 北海道 *Visit model spring hotel of "千と千尋の神隠し" http://matome.naver.jp/odai/2133542067335298001 *Rural area 島根県（出雲大社、足立美術館）　三重県（伊勢神宮、志摩）　瀬戸内. Please make a reservation for hotels early.

I am not from Tokyo area, so I don't know much about sightseeing in Tokyo, but I don't think you can encounter any peaceful quiet place there. You probably have to take Shinkansen or other transportations to visit more rural places. In terms of the language, you might have some troubles, but mostly staffs at the public transportations will be able able to help you with directions or even able to tell you some recommendable sightseeing places. Also, people on the street are generally friendly if you cannot speak Japanese, so don't worry. Just ask some young people. Some of them are able to speak in English. I hope your trip will be a memorable experience!!!:)