If you don't already have a portfolio agreement with a local or regional bank by the time you're trying to buy and hold your 4th or 5th property you are in a world of trouble if you're trying to rely on future off the shelf financing to get to say, 10 properties or more. 

Losses could be infinite.

The next question is do they stack on top of each other or do you need a shelf in between or a stand / rack to hold them?

In all of my infinite wisdom, I put a really nice subwoofer in a Ford Ranger I got for my 16th birthday, quit the job and went and got a better paying one with more options for 16 year olds.

We can dump infinite $ into the roofs, but it doesn't justify rent increases.

I believe that I have pretty solid systems to make things efficient for my cleaners: - well-organized supply closets with printed shelf labels and cubbies. - detailed bilingual checklists with staging photos. - 3 sets of all linens, enough for 3 turnovers to be completed without needing to wash. - laundry handled separately by a wash-and-fold delivery service. 

INFINITE!

I spent a lot of time in my last business looking for a CRM solution and it was hard to find an off the shelf system.

If it's so small that the untrained eye could miss it then it is probably something that can be treated with off the shelf products at a big box store.

Although a cash flowing long term rental seems to be on the shelf with Reebok Pumps these days.