Much more common is a short term - 30 day - 12 month option.  

The housing market in Bali is very active, with yearly rental ROIs of 25-40% being quite common.

I am afraid he's part of illegal gambling ring in bay area from certain regional ethnicities, these gambling casino ring was common few years ago.

Here is a common one I've seen stocked.

The common theme from this is definitely last minute fees. 

It's not super common, but not too hard to find either.

What if they break the lease is the most common one, accounting nightmare was another.

Contract grade furnishing for common areas will last longer and pay for itself in the long run but will be costly upfront. 

Another option to consider is using the space for Airbnb or mid-term rentals.Here in Texas, basements aren't common, but I found a home where the third bedroom had its own entrance right off the driveway.

This has become more common place over the past few years.