What we've learned is don't get mislead by the brief CG descriptions in catalogues and brochures or on websites.
For example:
"Near the ocean where you can hear the waves". Means that the actual water can be like 1/2 mile away, especially at low tide. The wind blows non-stop and can be colder than the dickens even in the summer and be so noisy you can't talk outside. As well, it's foggy most days and you won't see the sun.
"In a great fishing community". Means that the CG is run down, tired and seedy looking because that's the way fishing people want it to keep out regular RV-ers.
"Next to the old-town shopping district". Means that the CG has no redeeming qualities and is next to a railroad or industrial facility.
"At the river's edge where you will have a nice cool breeze". Means that there are tons of mosquitoes and other flying insects 24 hours a day so bad that you can't sit or stroll around outside.
"In an area where there are lots of tourist attractions". Not much appealing at the CG or in the immediate vicinity and the tourist attractions are at least an hour's drive away in any direction.
The best CG we've stayed at so far is one where we did a bunch of online searching and read some excellent reviews. It completely lived up to the recommendations. If you want a nice CG, search for reviews on the internet. :)