My favorite is Ginza （銀座）, Not so much young people around like Shibuya.. very sophisticated city.
Can be very expensive, but you can find nice and cool bars and restaurants in the narrow street.
but most of the restaurant closes at midnight, some bars open until 2:00 am. Sunday most of them are closed…
Roppongi (六本木）is well know place for non-Japanese visitor in Tokyo.
Its almost feel like you are not in Japan but some in western countries. You’ll see many non Japanese there! Most of the place is available for English assistance.
Shinjuku Kabukicho （新宿歌舞伎町）is close from our Sakura House office in Shinjuku.
Attractive neon sign everywhere!
Which night spot you like?