Indeed, I had already thought of the "Ladybird book" comparison myself before I read your post.
As a long time user of Data Centres I can say it omits 4 things that are at the top of my list in selecting the same (in no particular order):
1. Availability of power
2. Continuity of power.
4. Access to carriers (i.e. Fibre providers, telcos, etc.)
In defense of the author, I've known him for over 20 years and this is very sub-par for him. I can only assume it was written hurriedly the morning after an evening press event held by one of the the PR companies know to be more liberal with the bottle, or after an evening out with Steve Shipside - a event we used to describe as being "Shipwrecked".
There was once an afternoon where Manek and Steve came back to the office very late from a lunch with...