Denver RiNo - ISO sitter in hotel for 10/11 year old boy 4-5 hours SAT Sept 26

Hey, my almost 11 year old son and I are visiting Denver the weekend of SEPT 26 with a group of friends. We are staying in a hotel in RiNo b/c I have family nearby. We have an event to attend on SAT from around 7/8 pm - 11/12 and kids are not allowed. I'm looking for someone to come to the hotel and hang out with him for that time. You will not have to do much - he will be watching football on TV until he's ready for bed. But he's old enough to stay up until we return also. I used this site a few times when he was much younger and we traveled but it has been years.