There are multiple bus stops at OKW, and the theme park bus always stops at the Hospitality House last. So you can stay anywhere in the resort and still hop a bus to the HH. Then to get back to your area, you can walk across the bridge at the HH over to the Peninsular Road bus stop and take a bus back to your area. Or you can walk, it's only about ten minutes. The laundry room that beccasmom mentioned is free to use. You just provide the laundry detergent. There is a laundry room at each of the pools.
If you rent a DVC reservation, for the first week of December, you'll want to make that reservation as soon as 11 months hit. That is a very popular time for DVC members and studios usually book up first. You won't get daily housekeeping, just limited services, unless you pay for them. DVC is just a timeshare and members have to pay for everything. Anything not covered in their annual fees requires an additional fee. You can read the sticky threads at the top of Rent/Trade Board at the DVC Boards on the DIS to get an idea of what happens with a rental.