Booking.com Failed to Disclose MGH Hotel Resort Fee at Booking

During my stay at MGH Hotel in Las Vegas, which I booked through Booking.com for the dates 4–5 June with check-out on 5 June, I was charged an unexpected extra 110 USD at check-out as a “resort fee” for a standard room booking. When I made the reservation on Booking.com, this 110 USD additional charge was not clearly presented to me as a mandatory resort fee, and I only learned about it at the hotel. I consider this fee to be unfair and not transparently disclosed at the time of booking. I request a full refund of the 110 USD resort fee that I paid at check-out on 5 June and ask that this issue be reviewed so that such charges are clearly shown to customers in advance.