Well, I think the deal is that the tenant thought the tub needed resurfacing. So we agreed to resurface tub, since we want to maintain the tub. Resurfacing contractor gets there and the first step to resurfacing it to clean the tub. After getting through the cleaning step, he realizes it doesn't need to be resurfaced, so instead of just continuing and resurfacing then charging about $300, he stops and charges for the trip and the work done.
It's a long term tenant, but they are well below market rent. In the end I went with the standard practice of the PM, which would be to charge the tenant, which I think makes sense, since they are responsible for keeping it clean and didn't.
One key point is that they requested the resurface. If the tub was deteriorated, I would have paid for it, but it was just dirty. If the request had come from PM or workers, then I would pay for it.
We are also doing other work on the unit that they requested.
Anyhow, we ended up going with the PM standard practice for issues like this and charged it back to the tenant.