I had a tenant that wanted to renew a lease, but only for 6 months - which would have left us in the middle of January (in Michigan :) Apparently they may inherit a somewhat run down house, and wanted to keep their options open.

Common fees will include a set-up fee, a leasing fee for each turnover or a lease renewal fee, marking up maintenance, retaining late fees, and more.

Of course the risks are there that the owner will not renew the lease and start doing it themselves if you are successful.

Rentredi is a good software but BEWARE if you sign up for automated bill pay, they will charge your account if you do not cancel prior to the renewal and they will not refund your payment even if you request it the same day they pulled the payment from your account. 

Common fees will include a set-up fee, a leasing fee for each turnover or a lease renewal fee, marking up maintenance, retaining late fees, and more.

I have a guy who has been here since July, but I renew his short term stay for two weeks at a time, every two weeks.

Why don't you just non-renew him at the end of the term?

PM agreement is for 2 years and automatically renews if you don't cancel.SI homes seem to be built ok.

Kit showers or tiling, or tiling the shower (hot mop or tub shower then tile the rest) all are different3) what is the cost to renew the floor with a LVP?

Once renewal period comes up (if they've been paying on time and causing no trouble) you can decide if you want to keep them or move on.