May not be understood but "bad" is a dangerous term that can get you into some fair housing issues pretty quickly when you're advertising for potential tenants.

The primary distinction, in my experience, is the one-bad-apple problem- if you get a bad resident, you must take steps immediately to prevent that resident from chasing the others away or souring them to the building and reducing future referrals.To your question, I suggest looking at each unit and determining the fair market rent for each one.

Am I wrong to make a distinction between these two costs? 

@Jeffrey Donis that's a good point...I guess we don't tend to think of the two individual cities because people reference them together so often...but you are right, they are 2 distinct cities. 

I don’t know enough to be dangerous, yet.

(Think of this like a payable on death beneficiary on a bank account.)This deed has 2 distinct advantages: (1) Stepped up tax basis and (2) immediately owned by remainder beneficiaries upon death.

Other posts talk about the dangers of partnering with family and friends.

I just know enough to be dangerous.

(In such a situation, a tenant is entitled to a full refund of the deposit and a rent rebate) • The landlord has made a binding agreement to repair the premises • The landlord’s failure to repair the premises violates the covenant of quiet enjoyment of the premises (see explanation below) • The repairs are for the common areas • The repairs are necessary to correct a dangerous or hidden defect Express PromiseIf the tenant can show an express promise to repair by the landlord and a failure to fulfill that promise, the tenant has some options.

My favorite quite:“The greatest danger for most of us;Lies not in setting our aim too high, and falling short;But setting our aim too low, and achieving our mark."