ATokyo: Where are the best Ramen in Tokyo?
Try Tsurutontan in Roppongi but it's an Udon restaurant. You might be able to see Japanese comedians because one of the famous TV studios is just across the street. http://www.tsurutontan.co.jp/shop/roppongi-udon/
ATokyo: Exploring Tokyo solo for 3 days: Where to stay and what to do?
Try Sensoji Temple,Shibuya 109,Akihabara and these are all in Tokyo. About a tea house,,um,,I like Kayaba Coffee（http://kayaba-coffee.com/info.html ) You'd love it if you like Japanese...