Lisa,
For the past 3 years, we ran a successful Shabbton weekend at the Edison Hotel in Edison, NJ. I know that Magen David Yeshiva also runs their Shabbatonim there.
The staff is familiar with the setup for a Shabbaton, and are accustomed to dealing with a Shabbat observant group.
Best,
Joseph Dana
Director of Student Activities
Director of Leadership Academy
Hillel Yeshiva
jdana@hillelyeshiva.org