Best advice about Reno… don’t go.
But if you must… I haven’t been there since pre-pandemic but if everything remains relatively the same, then Atlantis first and Peppermill second. Both will give you a Vegas style feel to it. However, Atlantis has slight advantage as you may get drink tickets per wager and wagers are calculated towards their players club points system. Also, I am not quite sure if PM has a mobile app but Atlantis does have one.
And for an unique “smoke-filled” local joint, then Cal-Neva is the place. The last time I was in Reno, Cal-Neva was the last sportsbook to use whiteboard. To see them rolled down the board and write the odds always give me a good laugh. They also give out drink coupons.
Enjoy!