Even the nice ones are of lower quality and there is a stigma attached to them.Other than that, it's difficult to answer the question without knowing your market.

But to counter my own point, a lot of customer decision comes from location, your interior design choices, reputation and photo quality.

If the shed adds value compared to other homes of comparable location, quality, and size, then I would bump the rent $50 - $100 depending on the price of comparably storage units in the area.

With a commercial property, @David Beasley, the lender cares much more about he quality of the deal and your experience as an operator.

@John Redman the LL responsibility for the quality of drinking water varies by state.

To answer your question, yes, you can still find quality renters for bigger, nicer, more expensive homes.

This should be in any quality lease.

The 10% is usually negotiable based on asset quality which with proper screening due diligence  will work. 

When I say similar I mean age, location, size, unit mix, units quality, etc...

He is all the positive qualities listed above, but only focuses on investors and house hackers.