Castell Rooftop Lounge offers flexible options depending on your group size. For Small Groups, reservations for up to 6 guests can be made directly via OpenTable. For larger parties, we offer semi-private and private event spaces, including our all-season Terrace and Fireside Lounge. These bookings typically require a food and beverage minimum. For Full Buyouts, we can accommodate large-scale corporate events, weddings, and receptions. To book for 7 or more guests, please contact our events team at info@castellnyc.com or through the inquiry form on our website.