I gently disagree.

Front load washers require that they be left open after every load so that the moisture can dry and not turn into mold. 

"  :)   But a gentle reminder of what you would be forced to do isn't out of order I think.  

Then look online for a gently used one.

This thread has convinced me that gently-used or almost-new is not the way to go!

So I find ways to gently work my real estate activities into casual conversation, without beating anyone over the head with it. 

I would also consider a small printed sign and a gentle reminder when signing a new lease that they washer should not be overloaded.

I would go with a solid surround as the grout on the tile in a rental may give you problems either letting moisture in or with tenants not keeping it clean.

This paper backing is a vapor barrier and will trap moisture in the attic and you will have mold from the moisture trapped by this.  

Here is what my standard lease that I picked up from the internet and use with my rentals:(2) Repairs that Tenant will Pay Entirely: Tenant will pay Landlord or any contractor Landlorddirects Tenant to pay the entire cost to repair:(a) a condition caused by Tenant, an occupant, a member of Tenant’s family, or a guest orinvitee of Tenant (a failure to timely report an item in need of repair or the failure toproperly maintain an item may cause damage for which Tenant may be responsible);......Appears it includes failure to timely report as a cause to make tenant pay.I also have a Maintenance Addendum that I got online that includes: Immediately notify Agent of any evidence of a water leak or excessive moisture or standing waterImmediately notify Agent of the presence of mold, mildew, or similar growth in the Premises after you have attempted to remove it using common household cleaning solutions or anti-microbial productsImmediately notify Agent of any malfunction of any part of the heating, ventilation, air conditioning, plumbing, or laundry systemsImmediately notify Agent of any inoperable doors or windowsOn looking at it now, it does not state what the remediation would be if the tenant does not adhere to this.