We stayed at the Dolphin and had a resort view, which looked out across at the Swan. We could also see the Tower of Terror in the distance, the Boardwalk and some of Epcot including Illuminations
I would imagine at the Swan a standard view would be looking towards MGM and the car park (opposite side to the Dolphin). A resort view would be looking straight out at the Dolphin, wth perhaps a sideways view of the Yacht/Beach Club. A lake view would be looking out at the Epcot reosrt lake and Epcot.
Lake or resort would be the best views, but taking into account you are only there for 2 nights I don't think there will much in it really.
Taking into account the size of the Swan and Dolphin resorts it's more desirable to be close to a lift LOL