Would anyone know if The Duo Studio rooms at the new Disneyland DVC property would have room to park an ECV in them or are they just too small to accommodate one.
You may want to ask the folks over on the DVC board. There is a thread specifically for VDH I have been checking out since we are staying in November. Looks like a poster there stayed in a duo studio if you go to this page:
It will be very very tight inside, especially once the Murphy bed is down. Agree with @StarlitNight05 — a balcony might be your best bet but those aren't guaranteed for Duo Studios. See post #4 in the link they shared for a floorplan you can use to do some rough gauging.