If it were my duplex, I’d probably say no on customer pickups and yes on baking, as long as she’s following the cottage-food rules and the business isn’t impacting the property or other tenant.That gives her a way to run her small hobby business without dragging your property into it.

Short answer:  it is baked into the business model.Long answer:It seems you may be overly concerned on the transitory nature of apartment renters versus single family renters. 

I see many clients bake in a flip pr BRRR then decide when the rehab is done.

For stubborn odors, a mixture of white vinegar and baking soda can also help neutralize the smell.

What if both outcomes were actually baked into every deal, intentionally, from the moment you acquire the property?

Quote from @Ian Ciborowski: Chicago mainly has just 2 flats I notice.

Rents up, or flat, mortgage rates up, cost of new units up.

With cost segregation, you’re not just baking in nightly rates — you’re baking in tax-efficient ownership.

For SFH or duplex, most of them usually charge a flat rate ($100 - $150 per month).

We've definitely seen it and are baking it into our margins.