But I draw the line when there is risk of damage to the property, annoyance to the neighbors, health concerns, pests, etc.

Quote from @Arvand Sabetian: I think most others have already provided sound advice.I wanted to emphasis having a conversation with your tenants about the septic tank, not just a clause in the lease that you assume they'll read and understand.Many people are unaware of what they can be doing that causes issues to septic tanks (e.g., flushing the wrong items).Also, make sure you do a walkthrough yourself prior to filling the unit.

The waiver is only good for damages not lack of notice or not showing up.

When there's tenants already occupying the property, there's often times different leases that were signed among the tenants.Additionally, renting by room usually sees higher tenant turnover which in turn causes more work for the PM.Other challenges to consider:- Disputes/conflicts among tenants (different personalities if a tenant doesn't know the others prior)- Occupancy limits- Splitting utilities (what if someone uses more water?)

It won't impact the rental side but will cause issues on the rehab progress and permit nonsense instructed by the city. 

Hi I recently won a Small Claims Judgment against my former tenant who damaged the property and failed to pay rent.Does anyone have a recommendation for a good Small Claims Judgment Collection agency/firm that can help me collect?

This is causing a huge influx of people moving here for jobs.

Would be useful as a landlord when the tenant moves in/out to reference for damage. 

(high rise condo) The vent does not work and as a result humidity damaged the ceiling. 

(Confusing we know, this means that not only does the customer stay for 7 days or less on avg. they also don't come back multiple times during the year for separate trips and these stays add up to > 30 days -> Trip one: 7 days, Trip two: 7 days, etc.)Personal use of the property of 15 days or more OR more than 10% of the total rental days will cause the property to become a residence.