If it is very well taken care of versus abused, it keeps its value, if not, its value can easily go to zero.I hope this is useful.

I am not an attorney but I do not believe the tenant has done anything criminal even by sending inappropriate photos, that I think would only rise to the level of Sexual Harassment which I do not believe is criminal that is a civil matter until it becomes assault/battery.You would maybe be able to get the police (if you get the right one) to go talk to and possibly scare him telling him to stop what he is doing.

Washers and dryers fail more often than stoves and refrigerators because there are lots of moving parts and they can more easily get abused.

If you discover the repair was unnecessary or that it was due to abuse/neglect by the Tenant, then you can charge the Tenant for the bill.

Non-renewal is your best option for abusers. 

Aloha,First, your Rental Agreement should clearly state that Tenant is responsible for stoppages in plumbing fixtures or lines due to misuse or abuse.

Says husband could get abusive with her. 

Washer/dryer is one of the most abused appliances.

Tenants should be held responsible when they misuse, abuse, or neglect the property.4.

Nothing specific in regards to harassing and abusing on-site staff and contractors at this point.