I'd vote for Animal Kingdom or Wilderness Lodge. Lots of nooks and crannies around each lobby and plenty to explore at both resorts. Especially AK - it's like you're not even in FL anymore. Both have a nice lounge for a cocktail. Bonus at holiday time - both have amazing Christmas trees in the lobby. Bellevue Lounge at the Boardwalk is my other pick - great bartender, generally pretty quiet, nice indoor space but also a lovely patio overlooking the green. And plenty to explore on the Boardwalk if you were to get bored. Have fun!