I boarded Mysti the first time in a place called Bark-a-Bout, which was a facility that put the dogs into groups and let them romp and play, depending on their preference to other dogs, mostly big dogs with like and so on. She stayed overnight and came home and we did not know about her reaction to stress with her Addison's Disease at the time and we almost lost her to an Addisonian episode. We thought she was just overly tired, until I came home from work that Monday and she was comatose on the floor. After that, she went to a boarding facility run by a veterinarian office, no interaction with other dogs, and watched over by vet techs and an on call Vet 24/7. She was also on Prednisone 4 days prior to our trip, during the whole trip and for 4 days after we came home, and we had no problem with her boarding that time.
When we boarded Nexus we took her to the same place, which is called Serenity, and she had a great time there, it is a private kennel area, with outdoor access, so she could be kept separate from other dogs, which with Nexus is important as she is not dog friendly, and you can get different size "apartments", also you can get a TV if you wish, no extra charge in the room we got for Mysti, and they have web cam monitoring as well for a small fee in case you have a dog which requires monitoring. If we need to leave our dogs again, we will take them there, you can get a space for 2 dogs to board them together, and a discount for the 2nd dog.