I stayed here recently. The lounge is generally open all the time. It is self service coffee and soft drinks only. There is no evening service or breakfast in the lounge.
Evening service is in one corner of the restaurant. I found the offering to be extremely weak for a European property. They did also offer beer and wine.

Gulasch
the restaurant also offers a la carte eating.
Strangely in the lounge there is a menu for paid drinks. I

I just am not sure from whom you would order them.