A wood stove in the kitchen/family room & a pellet stove on the bottom floor/bonus room of this split-level home where the 3rd bed/ba. is also located with laundry.

In West coast it is around 3%+ a bonus.

Also a big military presence which is a bonus for a lot of reasons (more below).

(I pay my crew a first-time pass bonus for this reason).

(Bonus points to anyone who knows who I learned that question from!)

I bet adding a bathroom would be a huge bonus if there was room for it and it didn't break the budget.

The commissions on money to get the buyers in the homes that they then sell to the banks is pretty close to what a real estate agents makes, and they also can get bonuses too. 

I think relocation money would be nice and help ease the process...maybe offer to give them a portion of their deposit back early to use for their next deposit and offer a bonus for leaving a clean place behind, in addition to refunding the rest of their deposit.

Bonus points if you can force appreciation while you're in there.

The best bonus of house-hacking to me is the low entry point so with less leverage if the numbers work it should cash flow even better if you refinance down the line.