It's the atmosphere that really makes this show a gem. The artists and writers really made the setting pop -- it really feels like a gritty, sexy, noir, near-future world. The story is just OK, but the characters are varied and interesting, and combined with such an incredibly realized setting, it is a great show to immerse yourself in for 4 hours.
This anime has flaws, no doubt about it. However, the flaws are easily overlooked, and do not detract from being able to thoroughly enjoy this show. A highly recommended miniseries.