For men thinking about getting a separation and moving out, what's the best and easiest type of living arrangement you recommend?

This is for a guy who is empty nest, late 40's, married for 24 years, kid in college, doesn't live near family but would prefer his own place for a while, and travels often for work. Any examples of what others did in this situation? Moving out is a given.

For men thinking about getting a separation and moving out, what's the best and easiest type of living arrangement you recommend?
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