Wow! Thank you everyone for all your amazing advice, this has been so helpful.
I contacted the owners and explained it was against the rules and they happily agreed for their daughter not to stay.
For all the reasons mentioned above I ultimately did not want to agree to letting their daughter stay and so I left the ball in their court rather than trying to negotiate. If they had insisted I would have withdrawn but very pleased it has not come to that.
Thanks once again for all the amazing advice, what a wonderful bunch of people you are!
@CosmoBrownsCat, there seems two issues here. One is third party presence during housesit. Second is trust.
We will shortly commence a housesit where, during video call before sit confirmation, pet parent noted that an adult child may stay at the house for 1-2 days during housesit. Knowing this fact - and in agreement with wise words from @anon89364872 - we agreed and confirmed the sit. Housesitting should be a fair trade. Open, trusted relationship.
This statement is not consistent with THS Third Party Policy.
Iāve only had one host who mentioned their friends might want to stop by because they were close with the pet we were supposed to watch. I stated, āThatās against the THS terms and conditionsā. This is the easiest way to say no. Interestingly, my application and profile both state that Iām looking for hosts who will not violate this. I then specifically ask during the initial call if anyone will be stopping by.
Toward the end of my sitter profile, I offer a friendly heads-up about THS dealbreakers such as third parties, aggressive pets and pets with undeclared health issues.
I also mention that I value clean homes, fridge and freezer space.
Iāve found that hosts are reading my entire listing and taking note, because they ask relevant questions and note when I show up that they cleared out space for me and such.
Of course, Iām very selective about hosts and sits. And I added the heads-up about dealbreakers, because I had a few wasted video chats with clueless or entitled hosts. Iād prefer to avoid them and am OK if some hosts think Iām picky, because I am. No problem getting good sits, ones I actually want.