Someone who is easy to please, does not require constant pampering, attention or gifts or things done "their way or no way". One who is genuinely happy to enjoy the company of others. Easy-going, unselfish and usually a joy to be around. Usually male, as most women are high maintenance.
My friend from California came up to visit. He's low maintenance, so we just chilled, had a good time, and he didn't whine about my not having digital TV.
A person (usually a girl) that truly believes that he/she is not high maintenance, when they actually are.
Yeah man, she is still telling me that I should be grateful she is so low maintenance!