Annie, Lawrence has a fabulous rental market . The University of Kansas, Haskell Indian Nations University, and being a bedroom community for Topeka and Kansas City creates good rental opportunities.
Before you ask where to rent you must ask, to whom you wish to rent. For KC commuters with young families, the east side of town is good. College students desire to be close to the campus and the homes there tend to hold their value well. There are several good locations in town but you really should talk personally with an agent to best determine how to reach your goals.