Donatella's Den is impressive. The rooms are small, which limits activities, but well equipped. Some years back, I was lucky enough to see Maya Sintress some years back while on a business trip to Chicago. She had a dungeon in the meat packing district. It was well equipped and very spacious. There was enough room for her to throw a bull whip. I was in heaven. Most big city dungeons I've been in have small session rooms but they make up for it in other ways.