The BLT declaration on mentions this:
However, members and their guests frequently leave
ECVs in the hallways and it doesn't appear
DVC is asking that the
ECV be moved into the villa. If you want to be safe I would email DVC member satisfaction at
dvcmembersatisfactionteam@disneyvacationclub.com to see if it is allowed.
To me as long as the ECV does not prevent passage of cleaning carts and other ECVs and wheel chairs it should be permitted unless it violates Fire Code or is deemed to be unsafe.