We crate two of our dogs when we are away from home, but because of my husband's work schedule, they are rarely left alone for more than 4 hours at a time.
At night, we either close our bedroom door or put a baby gate in the doorway.
All four dogs don't mind going into their crates, but we like the idea of them being able to stretch out a little more and relax at night. (they are often belly-up and all stretched out during the night - in Buddy's case, that's about six feet!)
We have found crating to be a wonderful technique. Just don't give any food-type products that the dog can choke on, such as bones, rawhides, etc. If you give a kong, only stuff it with smooth substances, like craemy peanut butter, fat-free cream cheese, or liverwurst. Also, take you dog's collar off when you crate him. If the dog gets stressed and bangs around inside the crate, it can get its license/tags stuck between the bars - a serious strangulation hazard.
Good luck!