It creates good will like @Leslie Anne Morris said.

For a great tenant, I would've probably gave her $100 a month as a goodwill gesture but she was a not so good inherited tenant. 

Also, not to mention that's its a regular size appliance which can't possibly hold this much of food.I know I am obligated to compensate for their loss but as a goodwill, I still wanted to do something about it (in addition to getting the appliance repaired).

I think that giving them $100 off their rent is fair and will do wonders for goodwill.

So far so good. Will

We'll see if it does anything, and if not, it's just a few bucks towards some goodwill. 

You want to keep the good will with these existing tenants and show them that you'll improve the units for them in exchange for the increased rent. 

Turns out the pests have already vacated so we are good- will be even better after the new roof goes on and mitigates the only potential ingress holes.  

There are times when a seller's problem can be solved using some of these methods that does not result in a profit, but lots of good will for a distressed seller that will be long remembered.9.

In business you always want good will with your vendors, customers and partners.