To sweeten the pot, for every dollar of NOI you generate, you earn twice as much equity on a 5 cap vs. a 10 cap.

If it's a property you really like (from an investment point of view), you can sweeten the deal by offering advantageous terms (e.g. quick close, all cash, offering to pay a certain amount of the difference if the appraisal comes out higher than your offer if you're using financing, etc.) instead of a higher price.  

Since you're not paying a selling agent, you could even sweeten the deal a bit and offer the buyer's agent 4%, instead of the customary 3%.If you mean something different entirely, you're going to have to provide some clarification, perhaps an outline of the process of the deal you have in mind.

We sweetened the deal upping the down payment and the interest.

I try to sweeten the pot by telling tenants if it looks nice I usually can schedule all my showings in 1-2 days and I will do a cash deposit refund at the walk through if they leave it clean and rent-ready like they received it.

Could sweeten it by offering to pay the movers, make it easier for them.

It would even be worth it for you to pay a small amount more to sweeten the pot if you need to to get the short term financing. 

They sort of sweeten you up on all the great stuff until the last bullet point where they are no longer paying out until after guest check-in. 

Thank you @Alina Trigub, so it's safe to assume that it's not just enough to find the deal but you have to be willing to add something to sweeten it up a bit?

But, I do have some small-office warehouse also which has better rent p/sf so that definitely sweetens the returns.