No studios at any DVC resort have an in-room washer/dryer, they are in 1 bedroom and larger units. All DVC resorts have a free laundry room for the use of studio guests.
There are washers & dryers in the BWV guest laundry that are complimentary for BWV guests. You need only provide detergent and a softening agent (if you use one).
The BWV Guest Laundry is on the ground floor near the elevators.
W/D are not in any studio unit. You can use the laundry facilities on the first floor of BWV for just the price of the detergent and other things you need. The machines do not use coins, even though they look as if they do.
I use those laundry tablets when we are there. Sometimes they are hard to find in a grocery store though, but if you find them, they travel really well.