Determine your budget for your monthly rent and compare the options. If finances are the issue, your choice will usually be dictated for you.
Decide which would benefit you more socially, intellectually and/or physically.
Think about the ages of those who would likely live around you, and whether you have similar interests.
Consider your transportation options, taking into account expense and convenience.
Figure into your decision any work and family concerns.
Evaluate each environment to make sure it meets your standards for noise, pollution, security and safety.