For sure roppongi got its got sides, but those didn't reach me at all. I didn't feel like in Japan anymore and didn't really like it much.
But that's just my opinion. Someone who prefers traditional or rural Japan.
Lot's of people are going to Roppongi for clubbing and drinking.
I would not recommend it. First of all it is very very expensive and you can get more for your money somewhere else...
Then Roppongi is a dirty place too, compared to other districts in Tokyo.
On the other side, you are able to visit the Tokyo Tower through Roppongi station very quickly, which is a great sightseeing spot!
Furthermore, I heard that there should be many museums too in Roppongi. Some of them are impressive architecture buildings.
Roppongi is known as the "Foreigner district" within Tokyo. You can find all sorts of western food around here, along with lots of kebab joints.
Daytime is alright. Things feel normal, safe.
When night falls Roppongi turns "Seedy" for lack of a better word.
I went here with the intention to go clubbing once. I quickly changed that idea. The streets are dirty (For Japan) and full of touts trying to pull you into their ripoff bar or strip joint (Which will also apparently rip you off). It does not feel like Japan.
I have been to a few bars here are they are okaaaaay. But nothing special. But if being in the company of 30 drunken expats is your idea of fun, then maybe Roppongi will suit your tastes a bit better.
Perhaps I need to explore Roppongi more. But perhaps I don't really want to.
PS. If anyone tries to get/drag you into their bar/club, its probably awful and you're in for a bad time.
If you like to dance then come here. At night this is one of the cheaper clubs depending on the music you like. With this place there is also some good places to eat although I have only eaten at cold stone and cinnabon. There are many clubs to choose from. One of my favorites is New Planet. 1000yen to get in and all you can drink from 7pm to 11pm, without the drinks tasting watered down.
For all you gamers out there there is also the Konami building. Standing in front of a statue of Godzilla that lights up at night.
Some clubs will make you have a drink in your hands at all times. There are also people outside asking you to go to their shady clubs, that's the downfall. Day time, I can't really comment on that.
I like Roppongi in the day time. I like visiting to see art, or to catch a movie at Roppongi Hills TOHO Cinema. I come to Roppongi when I feel like eating British style fish and chips, or when I want to spend a little money on an expensive and high quality gift for somebody. But, I don't come here at night (anymore). I don't like the nightlife, the crowds, and the crime here after dark. Roppongi does have a reputation for being a place to go for drinks, but I would take Shibuya over Roppongi any day.