Just to be clear, I would personally consider Klosterstüble as closer to an inn or large B&B than…read morean actual hotel. I don't think there are more than a dozen rooms, and there are only three levels with no elevator. Not that any of that is a bad thing, I just want to make sure you know what to expect.
You could actually consider the small size of the hotel to be a good thing, since it really helps set the mood for staying in the quaint town of Rothenburg. Walking into our room, it had a level of comfort and antiquity that felt like you were maybe visiting Grandma, instead of staying at the Four Seasons - both will take care of you with much comfort and indulgence, but there's definitely a huge difference between the two. Despite the antique feel of the room, it was very comfortable, and the bathroom struck me as surprisingly modern.
The staff was super friendly and helpful, above and beyond in my opinion. It was also quite a good location in the old town of Rothenburg. I also appreciated their free wi-fi access!