The Park Hyatt is where most of  the movie's indoor scenes were filmed.

Lost in Translation (film)

Lost in Translation is a 2003 American film written and directed by Sofia Coppola. Her second feature film, after The Virgin Suicides (1999), it stars Bill Murray and Scarlett Johansson. The film revolves around an aging actor named Bob Harris (Murray) and a recent college graduate named Charlotte (Johansson) who develop a rapport after a chance meeting in a Tokyo hotel. The movie explores themes of loneliness, insomnia, existential ennui, and culture shock against the backdrop of a modern Japanese city.

• http://en.wikipedia.org/wiki/Lost in Translation (film)