Choose the kind of evening first
The Atrium and The Lounge have official hotel outlet descriptions. Compare setting, menus and seating for a meeting, dinner or drink rather than relying on an unverified nightlife ranking.
20 has a restricted-area consideration
Swissôtel states that 20 is inside Hann Casino and subject to government minimum-age requirements. Do not treat it as unrestricted lobby space; ask about eligibility and the route before booking.
Opening hours do not settle food availability
An open bar does not establish an all-hours full menu. For dinner, confirm kitchen last orders, reservation retention and service charges; ask about seating when events are scheduled.
Confirm the hotel return route
Even within one resort, do not assume the route between buildings. Ask the hotel for meeting points, walking links and vehicle pickup areas; plan any Angeles trip as a separate return journey.
Questions, answered
Is 20 an ordinary lobby bar?
It has a different access setting. The official page places it inside Hann Casino, so relevant age and access conditions must be checked.
Can I plan dinner without alcohol?
Ask the specific outlet about its menu and seating conditions, and state the preference when booking.