So, some background on the Swan and Dolphin: The Swolphin both is and isn't a Disney hotel. Basically, Disney is letting an outside hotel chain run a Disney resort rather than run it themselves. They did this to attract conventioneers who were used to hotel chains and had points with them (originally Westin and Sheraton, both bought out by Starwood, which is now bought out by Marriott).
It is a Disney resort:
* Disney advertises the Swolphin as a Disney resort on their site and it shows up in resort searches.
* Disney has a say in how they operate.
* Disney characters show up for their character meals.
* Disney gets a share of their earnings.
* Disney provides free transportation within 'the bubble' (buses and ferries, but not Magical Express to/from the airport).
* Disney staffs their Disney ticket center.
* If you stay at the Swolphin, parking is free at the parks (but not at the Swolphin itself).
* You get Extended Magic Hours
* You get the 60 day window for FastPasses.
* Park purchases can be sent to the Swolphin for pick-up later.
* You get all the golfing perks of staying at a Disney Resort
It is not fully Disney:
* You can use Starwood/Marriott points there, which you can't at other Disney resorts.
* The accounting system is separate which means you can't charge to room at the parks.
* They don't do MagicBands (no free ones, no MB door unlocking, but, you can buy your own or use old ones from other visits).
* They charge for parking at the Swolphin (other Disney resorts don't charge for parking at the resort).
* They have a mandatory resort fee (unless you bought a package deal, like from CostCo, in which the resort fee is waived or included).
* You don't have Magic Express to/from the airport (but you do have free bus and ferry within the Disney bubble).
As a convention resort, the clientele is more adults and less children. Occasionally, the lobby will be full of conventioneers moving to their next event. And it's cheaper than the other resorts on Crescent Lake (the lake between Epcot and Hollywood Studios). Often $200 a night or more cheaper.
It is very much a Deluxe resort. It has high class restaurants and shops. Excellent pools. A spa. Character dining. A gym. Children's activity center. Full room service. Full business class services. People argue over whether it's appropriately themed enough to be a Deluxe. While you're not going to get a bed shaped like a pirate ship, it's as nice as the Contemporary or Yacht, Beach, Boardwalk, or Floridian whose theming is nothing more than fine architecture and art. And the Swolphin has that, though, beauty is in the eye of the beholder. And, you can walk to two parks. I love that. And you can walk to any of the fine restaurants/bars of the other resorts on the lake including the BoardWalk.
If I had to choose between the two, I'd choose the Dolphin over the Swan. Mostly because most of the amenities (completely shared by the two... same owner) are in the Dolphin: gym, laundromat, all-night cafeteria, ice cream shop, grab & go food store (Fuel). The Swan is just slightly more luxe than the Dolphin, but, I'd rather not carry laundry to another building.