I think you need to be more specific as to what you consider "best". Best for one person might not be best for another. We stayed in a GV in building #16 last year, and it was great for us. Nice view, near HH. But I think requesting a specific building may lead to disapointment and frustration at check in, not to mention the extra work for the front desk people trying to fill such a specific request. Also, I agree with the others that all of the areas at OKW are great, each for different reasons. I would make a reservation for a GV and then specify what is important to you, in order of importance (non-smoking, near HH, near bus stop, near quiet pool, etc. etc. etc.) limiting your requests to only 2, or 3 at the most. Good luck.