Anh's car was a great choice for us on our week long vacation in Colorado. The price was well below the cost of a rental from the airport and the car ran well and we didn't have any issues.
She is about a 40 minute ride from Denver airport so if you're coming from there, do be aware that the traffic can get very heavy and an Uber/Lyft will run you between $40-50. (This was fine with us because we were still saving money compared to an airport rental).
Anh was great and was easy to reach on our arrival and departure.
Our only complaint with the car was that it was pretty messy inside and out when we got it. It needed a good wipe down and vacuuming inside so we ran it thru a quick basic car wash and used some of the Clorox wipes we found in the back seat.
In terms of the mileage that comes with the trip... it is PLENTY. We had it for just over a week and we did about 600 miles. We drove to Florissant and then made several trips to Colorado Springs, as well as Salida and Cripple Creek then back to Denver.