Interesting that I found this question tonight. DH and I just got back from our first ever stay at the Beach Club. It was beautiful - loved the rooms, the lobby, the CMs were very nice, helpful, "Disney" - I was amazed at the coordination of the details in the decor, and it was lovely to walk to Epcot, the Boardwalk, and DHS. (For the record, we have also stayed at the Boardwalk hotel and loved it!) Unfortunately, I don't think we'll be returning to the Beach Club.
To me, which resort is "Disney" apparently relates to what feels like "disney" in general to me.
So much of what makes a vacation a Disney vacation to me is intangible and totally wrapped up in my past experiences there. So for me, I really prefer to stay at a Magic Kingdom resort -either the Poly, the Grand, or the Wildernes Lodge (I like visiting the contemporary, but prefer to be just a little bit more removed from the parks). I grew up staying at the poly for my family's AMAZING trips there. It's where my family learned to have fun together, to be friends, to make memories that we STILL talk about. Then DH and I honeymooned at the WL and felt instantly it was our perfect choice. We've brought our DS there for his first trip, and my in-laws there for theirs. So for me, the MINUTE I step into the Poly lobby, or the WL lobby - my heart sings with great memories
that no theming, proximity to Epcot (my fave park), or outstanding customer service can overcome.
I'm very glad to have tried other resorts - like BC, BW, CSR and AKV. But for me, a "Disney" resort is a boat ride, or monorail ride away from the MK.