@Wesley W.Where's the screening step in your process ... where you pull the applicant's credit history (consent form signed as part of application) and run a background check?

Here is a link to my blog about renting out such RE. https://www.biggerpockets.com/member-blogs/12388/86773-renting-real-estate-without-the-owners-consent-isn-t-that-fraudAnd here are links to a couple short videos that discuss the demand, at least here on the West Coast, for places to park RV's.In the San Francisco area, https://www.youtube.com/watch?

A gate does not constitute an easement, it may imply consent, but consent may be withdrawn any time.

Provide a copy of this to every applicant and have somewhere on your application stating that the tenant has received it and has reviewed it with a signed consent.

If you do allow it, just be sure to explicitly state on the lease and explain verbally that they are allowed "2 Guinea Pigs" only and that any other animals are prohibited without your prior written consent.

Just curious, was there a clause in your lease agreeing that the tenant could make alterations and repairs without your consent or was this an implied agreement? 

Here's what our rental agreement has to say about repairs:REPAIRS.Tenant agrees to notify Landlord of needed repairs to premises in a timely manner by telephone and/or in writing.Tenant agrees not to repair their dwelling or anything belonging to Landlord without prior written consent of Landlord.Landlord retains the right to determine how and when the repair will be done, in accordance with federal, state, and local law and codes.If the need for repair is not due to damage caused by Tenant and/or their guests, Landlord agrees to pay for the repair.If the need for repair is a result of damage done by Tenant and/or their guests, and not that of ordinary wear and tear, Tenant agrees to pay for the repair.Landlord may decide to remove or replace an item, instead of repair.

I would have them sign an addendum (like @Max T. suggests) similar to this one:This agreement serves as consent from the Landlord to permit Tenant(s) to attach and use a clothes washer and/or dryer within the aforementioned rental unit under the following conditions:Any damage to the Premises caused by water originating from the washer and/or its connecting hoses will repaired by the Landlord at the undersigned Tenant(s) expense.Tenant agrees to regularly maintain and clean lint/debris from the dryer unit itself as well as attached ducting.

I consented to do it because he started to threaten me that I misrepresented the property and he can sue me etc.

Obviously a person with a long list of convictions is a no-go, but they usually have the girlfriend or grandma apply anyways and will move in without your consent - lol.But back to the main point - month to month.