This isn't a film for everyone. It's a slow film about two strangers gradually falling in love but never consumating a relationship. Both are vistors to Tokyo alienated by a strange culture. Although it's a Hollywood film, it's got all the feel and production values of a small independent film. Realism reins. Life moves slowly.
Yes, it's pretty much a showcase for Bill Murray. The acting and script is good. The film has a certain charm to it but don't expect great entertainment.