Just passed by today. Could bring a +1 guest due to OWE. Unfortunately my ferry (as all the ones leaving around the same time, seemingly) left from the other side of the ferry terminal. Thus no boarding from the lounge, but they announced when the ferry started and we could easily walk there in ~5 minutes. There were no going-up escalators. There was an elevator but we just brought our carry on upwards.

There were like 4 guests and 10 very attentive workers. Surprisingly super nice and quiet.