If you have access to the same amenities then I don't see why it would matter how big your unit is. 

For instance, as you've described the building w/ commercial on 1st floor and residential above, the housing section of the building code considers the 2nd floor to be the "ground floor" which by code must be accessible, so you would need an elevator or ramp up to the 2nd floor. 

A easement grants access to something, in this case the roof, Unless your terms include verage that allows you to terminate the lease it's is use governed by the lease.

So this room has the furnace, water heater, and laundry in it, and they are only accessible through this room.

I like the search features: https://www.biggerpockets.com/searchAlerts can be really helpful too: http://www.biggerpockets.com/alertsThere are a few self-contained guides that you can access here: https://www.biggerpockets.com/guides

You should have access to and a hard copy of your state landlord tenant regulations.

A brand of "landlord" lock that allows you to have master key access to all your properties with one key and to easily re-key smartkey locks when a tenant moves out.

That way you have access to your current equity and can strike on a deal as soon as you find it but you aren't paying down a new mortgage in a traditional sense. 

(other than those insanely hot Latina hotties that constantly try to snag a piece of me)No one.I care more about making money than a ego trip filled business name.Your business name should not be just a name.

I track miles, to do lists, receipts and more, much more because it allows me to organize easily, takes great scans of receipts and other documents I may need to access quickly including prospective properties I’ve done research on and is accessible on the cloud.