We have used several of the ones mentioned above and weren't impressed. Over three separate trips with our two dogs staying at different kennels, they ended up going to the vet twice. All three times they came back with fleas or rashes and twice they came back with something else like kennel cough that required meds and rest to fix. Both dogs went in with every vaccine and normal health and came back less so. All three trips were to well known and recommended places.
Each time we called the kennel to let them know and they couldn't care less.
We have switched to having our neighbor take care of the dogs, or haul them to a family member even if it is a long way out of our way. In the long run, they have a much better time and end up healthier. I wouldn't use a commercial kennel unless it was the last resort.