As a necomer to FT, you may not know about the SEARCH function. Entering
"Vienna" would have brought up at least two threads which would have answered your question.

Briefly, the Club Lounge is on the top floor with a nice view of the Stadpark. There are hot scrambled eggs and meats at breakfast, as well as hard boiled eggs. Usual coldcuts, cheeses, pastries and breads. Juice, coffee and teas. It is a small lounge, about the size of two or three rooms.

During the day there are pastries and teas and coffee. The evening spread has hot and cold hors d'oeuvres and a fairly good range of alcoholic drinks, though second tier labels. Sorry, didn't notice any donuts nor Duff beer.

As for the bath, I recall it was a large tub with bath salts. Nothing special unless yours refers to a spa package you've booked.