Interesting, on mine there was no access to the BIG space under the port seats, I cut in a couple of hatches to get to that storage space, under my starboard seat I have an EL panel for the electronics behind two doors in front and a bar in back. I also mounted wedges under the seats to make them lean back a little to be more comfy to sit in, big diff.
I did see pictures of one that had an AC under one of the seats. My ACs are under the port locker in the master an one under the seat in the cabin. Fortunately we don't have to run them much here in the NW they are a little noisy. My diesel fired heater that pumps hot water to radiator thru out the boat is more important and no noise#128522;