I read alot of guidebooks. This except is about the Loire Valley in mid-France. Its a place I know very well. And features Blois, Amboise,Chinon, Azay-le-Rideau but not Tours
Why not Tours?
Tours in the major hub. Its where you catch your train. It also has connections with Paris which you can reach in a couple of hours and contains the St Pierre des Corps train station which has the RER. How do you get between Tours rail station and the St Pierre des Corps train station. Most people would stay in tours - but to not include it?? Its dismissed as (but it has little to offer visitors - I wouldn't sleep there)
Whatever you think of the attractions to tours it has a good range of acomedation and is local fulcrum. It should be included. You actually do yourself a disservice not including it
I would rather use Rough Guide