I chose this over other guidebooks because it offers full color with pictures and various maps, though I think I'll buy a more comprehensive guidebook now that I've gotten a sense of the neighborhoods and what they have to offer. This book provides a good overview of what to see in various areas of the city, but it somehow seems incomplete. It's like a giant brochure, which, I suppose, is what all guidebooks are.
What's missing:
tips about which streets to take from point to point
surface conditions (cobblestones, concrete, steps, slopes...)
weather tips (seasonal advice or warnings)
What's helpful:
visual representation of landmarks, attractions, and distances
days when places are closed
photos
organization by area
many maps