The idea itself is great, and it does work, but their execution is so-so, and it's very clear from the Commmnity Forum that their development team is either severely understaffed, overwhelmed, or mildly incompetent.
Trivial bugs like all times showing in GMT, regardless of the timezone, have been left unfixed for MONTHS. None of the bugs I've reported have ever been fixed, even when I provided the code to fix them.
The reviewing system isn't blind like on Airbnb (where the host and the guest can't see each other's review until they BOTH post it). Rather, as soon as one party posts the review, the other can see it. This leads to artificially inflated reviews, because neither party wants to leave a negative review, for fear of retaliation with a negative review for themselves. So you have to read between the lines to figure out the problems with a sit/home or with a sitter.
The community has been asking since Feb 2021 (if not earlier) for this review policy to be fixed (i. E. made like Airbnb's), but THS has refused without any explanation, despite the change being rather trivial.
Unfortunately there's no good competition (except for the AU/NZ markets), so all new users flock to THS, which has little incentive to fix their issues.