A bathhouse is read as purification and shared openness. Dream books see it as cleansing worries in company, and as comfort with being seen without the usual layers.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.