Undisclosed pet fee made it...

Liked: The cabin had all the things we needed like coffee maker, microwave, and hot water in the shower.
Disliked: They don't disclose a separate pet fee when you use booking.com. The booking specifically says 'Pets OK' but doesn't mention a fee anywhere. Confusingly, the booking also says, no pets allowed, so it seems like don't have a clear policy about this and are just trying to milk customers for additional money on what is already an overpriced off-season, mid-week stay. They forced us to pay an additional $25 saying "this is our policy". My policy is to have clear communication about what I am paying, but they didn't care about that. They blamed it on a 3rd party booking, to which I said, "you still need to tell customers they are expected to pay an additional cost". This wasn't listed anywhere, and if I had more time and resources, I'm sure there could be a lawsuit against them for their lack of disclosure. They did say 'Sorry about that" but made no effort to compromise or accommodate their mistake.