If the landlord is paying any utilities that are based on usage such as water, then I might discuss a rent bump to compensate for the anticipated increase in usage and address that with the lease update adding the person as an occupant. 

Aesthetics won’t be an issue and it will pay dividends in the long run with eliminating landscaping/lawn and water costs.

If not, what happens when neighbor owner isn't maintaining their roof and water leaks are impacting your tenant?  

They put levels on the pad and check to see if there are any noticeable water entry points.

I recently have a water leak in a house.

Will I need to pay for sewer, or is this included in the water bill? 

This said, there are good people too that understand the challenges of the process and help investors navigate these waters.

The lakes region benefits from some of the nicest bodies of water in New England as well as close proximity to some excellent skiing, snowmobiling, snowshoeing and other winter activities.

It included similar "loss of rental income", same liability limits, included building code upgrade, vandalism and even 10% for water damage and 5K for rot.  

I just returned from a Real Estate Elevated seminar and I could feel the snakes in the water the whole time I was there.