There are 2 base areas. River Run and Mountain House. They are about 5-10 min walk apart. I prefer to ski out of Mountain House base, it is less crowded and typically less $$$ Plus you do not have to ski home on the crazy busy River Run "run" (That is me, I dislike that run ). The other thing about River Run is that units size varies greatly, even within the same bldgs. The condo complexes are all really close together. To me I'd ask about view and sq footage. There are restaurants right there.
The closest to the Lifts at Mountain House base are. Know that Mtn House base condos are more spread out than at River Run.
Slopeside only studios and one bedroom, covered parking, shared hot tub Next door are Chateaux DuMont nicer, large units though no covered parking some have private hot tubs, No community pool/tubs Essentially the same location
Next are Ironwood Townhouses, Large multi level townhouses with really tiny garages. ( A Suv will not fit ) Some have private hot-tubs, no community pool-tubs.
Key Condos studio - 3 bedrooms, Shared hot-tub and indoor pool. Covered parking. Essentially the same location. Of these the closet to River Run.
Know that the free shuttle system is pretty efficient so you could stay further away if you'd like without too much trouble. I also like the little lake area but nothing really close by for dinner other than the Keystone Lodge and Spa.
In years past Keystone has offered a 4 day lift pass in early fall. I doubt it would be good for Pres Weekend if that is in your plans otherwise it is a great deal!
Edited: 1:03 pm, August 12, 2013