Hi, I will take a stab at this. The code is your actual unit number, Sycamores is in the West Hill community and it looks like SY-20 is in the building closest to Rt 108. See this map:
http://www.smuggs.com/pages/summer/lodging/village-map.php
I believe the West Hill has a separate check in, but I would call ahead to make sure. There is also a pool that is only for West Hill owners and guests. I think there is a playground there too.
The walk to the village is very easy in the summer, head down Meadowlark trail and you will be in the village within 5 minutes. Also, I believe that Meadowlark is the walking path to Rum Runners reservoir.
I have not stayed in a Sycamores unit yet (will this summer), I believe they are very similar to Tamaracks, which we have found the two bedroom to be very comfortable.
If you go to the website:
www.smuggs.com and click on Summer in the upper right hand corner, there is a good bit of information. I don't think it will be updated for this coming summer until after ski season is over.
Hope this helps.