HI VLB, sorry to hear about your business situation..
I couple of ideas..
This website has just been launched pre-selling vouchers for NZ accommodation and attractions so you may wan to check this out and add your NZ villas https://savemybucketlist.com/
Regional tourism offices and Tourism NZ are all about to or have already started local marketing campaigns targeting locals and domestic travellers (once we can) so stay close to your local RTO where the villas are located.
Also this facebook page seems to be able to promote anything “made in NZ” and I have seen properties etc being promoted on here so worth a look https://www.facebook.com/groups/519618962054849/
Hope this is helpful for the NZ villa side of things. Best regards