Upvote:1
Qatar Airways provides multiple tours in a day and they suggest tours based on your arrival and departure times. You can take a look at the official website. I, myself, took a tour last year and it was decent.
However, the tour was cut short due to very long immigration queues and We had to wait for around 90 minutes. The tour agency tried to talk to the immigration authorities for faster immigration clearance but the request was denied.