BCV & BWV both have the laundry room in the same building. I'm not sure about the others. They are free and although there are coin slots on them, don't add coins, just push it in. You will need to bring or buy your own detergent.
WLV is on the first floor around the corner from the elevator. I have found that OKW are the easiest to use they have the most. WLV is not too bad, BCV nearly impossible (might be all those wet swimsuits?) and I've never stayed at BWV. Honestly I think that two washers and four dryers per resort is a little too few.