Advantages and disadvantages of long-term leases?

[Dan Graves]

First time commercial property owner here.  I'm getting ready to lease a property in the Sacramento area and one of the prospective lessee's has asked about a 5-year minimum lease.  I see the security part of this as a plus (no vacancy) and the fix rent cost a negative (unless that's written into the lease).  Are there typical longer term lease agreements that are used?  I'd appreciate any insight you guys might have.

Dan