Look at the different activities that are available. The camp should be in reasonable vicinity to a hospital. Transportation access to the camp should be hassle-free. Investigate the safety record and police report activity of any camp you are interested in.
When looking for summer camps, the key things I look for are:
the hours and days -- does it work with my schedule?
the type of camp -- is it something my child will care about?
the cost -- can I afford it?