Very luxurious. Shopping, fashion, night life... the same basic ingredients for any popular spot in Tokyo. But this one is special because all the stuff is really expensive. Trust me. That makes it better. All of the beautiful people everywhere make this a visually pleasing experience, too. Store displays are more like art so you can at least appreciate the gorgeous things the stores know you'll never be able to afford in your wildest dreams.
It's taller than Roppongi Hills by a couple of meters. Who says size doesn't matter? While they may not have the city night view (the top floors are obscenely expensive condos, not tourist attractions), they do have some great bars/restaurants in the area. It's only a night spot if you like taking walks in the park or having a relaxing glass of wine at a restaurant. The only club-like atmosphere you'll find is at A-971 (which is choc full of depressed finance people, these days). Luxury shopping and the same basic amenities you find in Roppongi Hills, minus the theater.
Wonderful dreamscape. Every single time I go there I feel like I'm in Disneyland. Everything is immaculate. It feels so space-age. Wonderful restaurants. Good museum. Beautiful view, especially at night. Great luxury shopping as well as affordable boutiques. Oh, and the movie theater is pretty nice, too. If you have a chance, definitely check out the premier seating. Enjoy a beer with your movie and recline. Not your average theater. Because of the large numbers of foreigners who flock to this capitalist mecca, virtually all staff speak English.