Running an airbnb, especially if you’re receiving compensation (which you absolutely should as you’re doing work that earns the HOs money) could turn into issues for international sitters as you’d be working illegally. For foreigners, sitting can be a grey area in some countries (though blatantly illegal in some, like the UK). Actually working and receiving compensation is no longer grey, it’s illegal everywhere unless you have legal ability to work in that country.
It’s also a slippery slope as HOs can misrepresent the level of effort involved. I did a sit once where the HO started running their house as an Airbnb AFTER I accepted the sit and didn’t tell me until after arriving. It was one of many lies they told.
They were adamant that it was super easy and talked me into trying it for one weekend just to see how easy it would be. I did it because I’d literally just flown to the opposite side of the planet to do this sit and had no alternative plans prepared. It was a NIGHTMARE.
They’d rented rooms out to a group and they were getting ready to party and kept tripping the breakers. I had to keep resetting everything, finding them stuff in a house I’d just arrived in, they kept entering my personal bedroom without permission or even knocking, I was expected to share my bathroom, and one of them ran into the gate at the entrance with their car, knocking it off the rails, so I had to deal with that.
They also messed with the animals. The HO had a VERY old cat that basically just laid in her bed on the porch under the table and napped. The guests took it upon themselves to move all of the porch furniture elsewhere and tossed the cat’s bed into the garden. I had to go search for her under the bushes and I moved her to another area with her bed that was away from them.
The last straw was that when I woke in the morning, I found that I was padlocked into my section of the house and I had no way to get out. One of the guests (who wasn’t even supposed to be in that area of the house) had locked me in and taken the key. If there had been a fire, I would have had to jump out of an upstairs window to escape. I had to stand on my balcony and yell until one of the guests heard me and came and let me out. For this the HO “generously” offered me $5/day compensation for checking people in and out.
So no. Hard pass on any mention of airbnb or similar because it’s always fine until it’s not and then it can be a freaking nightmare and YOU have to deal with it.
I ended up leaving this sit due to the massive misrepresentation by the HOs and they were banned from the platform, but it was a big struggle for a while and a lot of he said/she said. Thankfully I had copies of text conversations with them outlining all of the problems that were happening and discussing all of the things that were misrepresented and the site handled it quickly and well once I was able to provide proof.
ETA: thankfully something to this extreme is so rare that it’s barely worth considering and it wasn’t the fault of THS, by any means. But I hear too many airbnb horror stories to want to take that burden on. It’s just too high risk. Some of the stories I’ve heard would make your hair curl.