I'd like to mention that the bookings we received from HomeToGo are coming from very low-quality guests. On top of that, one of these guests recently disputed the card payment he made as fraudulent after he stayed without any problems. I contacted HomeToGo about it (for their support) but heard nothing in the last 10-11 days although I sent them a couple of reminders.
since you process your own payments, I doubt HTG will do anything about chargeback. You should vet HTG guests just like all other guests. I hope you have rental agreement and require ID. No OTA will vet guests for you but if you have documentation (signed rental agreement and ID) chances are you will win the chargeback.