I always feel out of the loop when everyone is discussing WDW since I've only been once and my family calls it the nightmare trip. However, DLR I know! You will find the GC the best place hands down to stay. Out of the three DLR hotels I'll only stay at the GC. Mainly because it is beautiful, and the access to DCA is amazing. Have a little breakfast at Whitewater Snacks (HUGE burrito, enough for 2 people) walk around the corner about 30 steps and you are in.
The park view is wonderful..watching everyone get the park ready, sitting on your little balcony with the coffee and fluffy robe. Even the DD view is nice..twinkly lights and you can hear the musicians in your room.
Easy to get to DL also, no tram or anything, just walk across DD and you are there. Very easy side entrance, quick and pretty walk. Certain floors have the stairs exit right at the La Brea bakery. (we stayed on the fifth and it was great...excpet for the last day when we popped out and the Disney employee was shocked because she thought we'd walk right out into the marathoners who were racing by. So..we ended up having to call somoeone in our party to come down (in bathrobe) and open the door for us. You can get out of the door, but not in!)
I love DLR. The new things at DCA will be nice, but I really like it even now.
And DL is so cozy and has such neat meandering walk ways. Walt's land. I love it.