I had to leave town for a week for work and was very worried about leaving my poor 2 year old pooch alone. What sealed the deal for me with Camp Bow Wow was their webcam which I can watch through an app on my iPhone. It's live streamed and I could watch him from New Mexico from my phone all day (my coworkers were very impressed!)! There are multiple cameras in multiple rooms (you can watch from their website even if you don't have a dog boarded) but the dogs usually stay inside where it's cooler. There is usually a human in there with them too, and the dogs tend to just play with themselves. It really put my mind at ease that I can check in anytime and watch my dog have fun with his friends.
edit: Took away two stars because I realized that they leave the dogs alone at night. Now I prefer boarding my dog with a dogsitter for a better peace of mind.