Houzz is the new way to design your home.
Extr Hamel Sept 1st photos and comments
Staircase likely takes up 6-7 feel in width, then 4 foot hallway with steps down to back deck, with bath/elevator shaft or bath/laundry on a short wall, the otherside of which forms the wall of the "gym".
If the left side of the house continues to be "longer" we could reverse this staircase pushing it toward the gym further and having the downsteps and railing abut the hallway down to the back steps and door. What this does is remove the wall abutting the gym and make it open to the staircase. The 1/2 bathroom/laundry or 1/2 bathroom/elevator shaft would now abut the bedroom on the back and right of the 1st floor.