It is vital that your daycare facility has experience with dogs, especially with training and care taking. You do not want a place that will encourage your dog to find new bad habits. Also, investigate which vets they like to use, and how they handle dog emergencies. Also, notice the interior of the facility to make sure there is nothing your dog can harm himself on. If your dog is antisocial and tends to be aggressive, perhaps daycare is not the right place for him.
Most facilities suggest having a dog walker.
Dog walking is a great program. If you can find someone you trust to take your dog each day, your dog will feel more relaxed and enjoy the attention. When interviewing dog walkers, ask how many dogs he takes at one time. This is important, because your dog might require one on one attention, rather than just running around in a group. Ask what the walker's program is, and where he likes to go.