Bill&Laura,
Internal dimensions of our 2010
EggCamper are:
Internal length = 154" (12' 10"); if you subtract the 54" wide bed across the back and the 30" shower/toilet stall in the front, that leaves a 70" long open center aisle (5' 10").
Internal width = 87"; if you subtract the 23" wide kitchen galley (curb side) and the 24" wide dinette (street side), that leaves you a 40" wide open center aisle (3' 4").
Internal height = 78" (6' 6") at center.
The 70" x 40" open center aisle is plenty big enough for my wife and me to comfortably negotiate around each other.
Hope that helps.... Dale