I stayed at the GC before my family size required 2 rooms. It ws very nice and clean, no complaints there. The bathroom was a bit small considering that I was staying at the most "deluxe" of the DLR properties. In comparing with friends, they all wish they had stayed at the GC, but the grass is always greener?! One thing I miss from that hotel is the manners that everyone seemed to have and the peaceful experience. In other hotels I have experienced noisy, inconsiderate people to a much higher degree, smoking in the outer walkway - trash and litter left about - LONG waits for elevators.
I will say that the walk from GC to DL was longer than the walk from hotels across from the park. The CA entry was nice, but we always started off in DL so it didn't work for us. We did make quick trips back to the hotel from the CA entrance from GC, especially to change after Grizzly River Run. That was very nice. The convenience to the character meals was great!
If I only reqired one room, I would stay at GC again just because there is the magic of Disney in staying on-site and the reports from DLH are scary. I think PP would be too far for me.
Have fun!
Becky