What makes Rudas Bath stand out is definitely its 16th century core, and the fact that the bath has a special very late night opening hours every Friday and Saturday (the baths reopen from 10 pm to 4 am, both nights). Also, Rudas is the only thermal bath in Budapest, which has men only and women only days on weekdays, when aprons are worn by many guests instead of traditional swimwear.
Rudas Bath has recently been restored (in 2012), and is located at the foot of the scenic Gellert Hill on the Buda side.
Via Thomas-Penette Michel, Brigitte Benedetto