Many will say their eventual commission is their incentive and this is simply the nature of their work, but something like a gas card would help let them know you appreciate their hard work and should be pretty universally accepted as opposed to trying to guess what restaurants they might like/stores they might shop at.

If you have an evictable offense, put it back on the tenant to step up they're game and get the sibling out as opposed to their likely lame attempt of asking them. 

Then you just acquire more properties with better turns as opposed to 1 or 2 properties with all cash or big down payments.  

BUT, i have been the victim of two arson attacks at two different residences(stemmed from my confrontational nature, even though I was morally in the right), I have several friends/acquaintances that have been murdered by opposing gangs of their friends or relatives, even though they themselves were not gangsters.

That might make you feel better about having a cleaner as opposed to a service, which will eat into your profits.

(I found this out because I had tried barricading off an exterior access door which homeless people were breaking into so they could sleep in the basement.

Some of the rehab was done by us, like interior and exterior paint, and the installation of the doors , it was a great experience and the beginning of our real estate career as investors.

They are investing based off their relationship with you as opposed to the merits of the deal only.

Most exterior work is provided by HOA - lawncare, snow removal, maintenance, etc.. this makes management a bit easier.

If I can gift wrap a deal to an investor and learn at the same time I feel like that would be a win-win for all.I can bring 2 out of the 3 things needed to do the deal minus the knowledge part.Please don't get me wrong, I am not opposed to doing the research, I just didn't want to waste time trying to research stuff I have no idea about.