I like that they are very upfront about what is going to happen when you rent hashing power, how much it will cost per month etc., so there's no surprises at all! It also makes things easy for me as an individual who doesn't have any technical expertise in this area - everything gets explained clearly enough without being too complicated or boring (in fact some of their terms can be quite confusing!).
They're always available via email if anything comes up during my rental period which has been great since we've never had issues with them yet :) There really isn’t one thing i dislike specifically here but just want other people looking into doing hash rate rentals/pools using different providers out there know exactly where not go wrong by choosing HashHogs over anyone else :).