During lecture periods, the GEWIS room is open from 8.30h till 17.00h (Monday-Friday). During exam weeks, you can enjoy a cup of coffee, beer or board game until 18.00h.
The board can be contacted by phone (+31 40 247 2815), by email or via WhatsApp.
On info.gewis.nl you can see whether someone is present outside these hours.
Upcoming special opening times (for all holidays, check the calendar):