I almost was going to manage a poker room.
What was the problem?
They would allow smoking, in that closed environment.
First i will make it a no smoking area. (Smoking outside the door)
2nd is the rake %.
Keep the rake low and attract more players.
I would implement more weekend tournaments.
Satellite tournaments during the week to allow players to qualify for the weekend games.
People love variations, so a cash game table with alternative games.
Free dinner on the big tournament nights.
Also a weekly best hand winner, bad beat bonus schemes.
Good local music, TV showing
poker games
Food and drinks at a subsidiary cost.