Depends on the property condition, correct pricing (I agree that sometimes a bit of vacancy is ok if you maximize revenue potential through pricing), advertising, management, customer/guest experience, ect.As for "small units", in particular studios: I love them as far as cash on cash return potential, "profit per square foot" and versatility. 

Humans aren't made to screen stare in a vegetative state all day. 

Seems like a versatile market in terms of house-hacking strategies. 

People love this product for its versatility.

You could grow fruits and vegetables to sell at local farmers' markets, or start a subscription-based service that delivers fresh produce to local customers.3.

Hard money lenders from investors are usually the most versatile way through going about this. 

I know, it sounds irresponsible to not know exactly what one has purchased, however, this little portion of the property was tucked away behind a wall of trees and vegetation.  

Any crack 1/4" wide is like a revolving door to a mouse, so it may be a losing battle in an old house, regardless of cleanliness, vegetation, etc.

I am an aspiring wholesaler looking for a kind of mentor who is well knowledgeable and versatile. 

Vegetable raised bed above for tenants?