Finding a good boarding facility is important for your pet and your piece of mind. The kennel must provide quality food for your dog or allow you to bring your dog's usual food and any necessary medication. You, or a family member or friend, should be allowed to visit the dog at any hour. You should be suspicious of any kennel that has limited visiting hours. Find out what kind of runs the kennel has for the dogs.
Cement is the best because it is easy to clean.
Your dog should have its own separate run, so it will not be exposed to any problems or germs other dogs might carry and make sure the kennel only admits dogs that are fully vaccinated. You should feel comfortable with the people running the kennel. If they are not nice to you, chances are good they will not be nice to your pet. Trust your instincts and remember, you get what you pay for.