Very Good place to be and exact as Trip.com says it is.
This is one of my personal favorites in terms of towers and high places in Tokyo where you can get an incredible view of Tokyo's skyline. Visit at sunset for some added romance. On good days, you can even get out to the heli-pad which lends a whole new perspective to Tokyo. The heli-pad viewing is not for the faint of heart or those who have a terrible fear of heights.
Great place to get a sense of the city, as Roppongi Hills is situated on a hill overlooking the city and Tokyo Tower. The Roppongi area used to be the base of SCAP following WWII, and you can still see the impact of the American presence there. Go to the Observation Deck of Mori Building. Also - There are a host of delicious restaurants in and around Roppongi Hills.
Roppongi Hills, a masterfully designed shopping/dining/office/residential/hotel/gallery/museum complex, is part of the Art Triangle Roppongi, jointly formed by the National Art Center Tokyo and Tokyo Midtown, an equally impressive feat of urban architecture. At Roppongi Hills look for public art including Louise Bourgeois' giant spider "Maman," and masterful displays of contemoporary art at the Mori Art Museum (which also affords views across the entire city and to Tokyo Bay, even Mt. Fuji when the weather cooperates). These have all helped to transform Roppongi from a sleazy pleasure quarter into a high-class neighborhood with all the bijoux trimmings, all since 2003.