To set up a gaming space in a small room, start with a desk about 100 to 120...

https://www.alphabookmarks.win/planning-a-gaming-setup-in-limited-space-means-choosing-a-desk-around-100-to

To set up a gaming space in a small room, start with a desk about 100 to 120 centimetres wide to fit your monitor and keyboard comfortably. Use a monitor arm to save desk space and keep your screen at eye level