Can you walk to Hollywood from Swan Dolphin? or only Epcot?
You can walk to Epcot & DHS. Its just under 1 mile to DHS and just over 0.5 miles to Epcot International Gateway from the Swan.
We love staying in the boardwalk area and are SPG Gold members, so we stay there on points usually. The resort fee bums me out because we're usually in the parks all day and don't really use the amenities. I think in 2012 it was optional fees for the fitness center, etc so that was awesome. $25/night + parking (if you drive) kind of hurts - even a "free" 5 night trip is $200!
Also, we found the Swan (Westin) a bit more comfortable & quieter than the Dolphin (Sheraton) - not including the renovation construction noise which annoyed us on our 2014 trip - that might be done now though. I also liked going to Il Mulino for a drink after a long day in the parks, and we had decent sushi and heard horrible karaoke at Kimono's.
The laundry facilities are only at the Dolphin (of course you can walk there from the Swan) and I don't think they have the online feature like WDW properties have to see if machines are available.
We took an Uber back to the airport and it was about $45 (this was early Sat AM though, light traffic)...we also took one to AK for AM EMH, and it was only $6 - best $6 ever spent, no waiting for buses!