It was interesting for us from a tourist point of view. It looks very impressive from the outside - it's like a medieval castle (there used to be a monastery), it's illuminated in the evening, there's a convenient embankment with a wide sidewalk nearby - convenient for walking. We were in the cave church (there is an operating mode there, you can stumble upon a closed gate). Strangely enough, it turned out to be easier to find the entrance than they write on the Internet - a convenient path past the cute sculpture of St. Stephen with a sad horse - beautiful views from the hill to the Danube, bridges and the other shore. The cave church itself is interesting (because we don't have any), but just for once. We didn't go to the service, we were too shy, and then we walked around, looked, and the girl played the little organ charmingly. You can take souvenir postcards for donations.