There is a laundry room by each of the pools, so yes you'll have one in the 70's section.
The room photos of the renovated rooms are only mock ups; they're not set yet on the design (according to the room assigner I spoke with two weeks ago, due to our room type only having one free when we checked in). She said they're not set on what the flooring will be for sure, but that they're getting rid of the king/double roll in shower room type that we stayed in and are booked in for our next two trips. She did confirm that they will have a coffee maker. We bring our own to Pop, so that will be nice to not have to bring it! My guess is it'll be the same pod type that the deluxe resorts have, since they're small and not expensive? I personally don't like any coffee at Disney other than Starbucks, so may still bring my own maker!