Queen's Brothel is quite possibly one of the strangest brothel sims I've ever played. By that I mean, it's absolutely nothing like any other brothel sim.
Instead of managing girls, training their skills, experiencing events, and making money, Queen's brothel is more like a VN. It's a story about the trials and tribulations of a prostitute named Queen and her attempts to establish a brothel and make money. Throughout the story she meets other people, has sex with them, inducts a few new prostitutes and generally hoes around, making loads of money along the way.
It's... not bad? It's just very strange if you're expecting a standard brothel sim. There is a brothel, but lots of the sex takes place in other locations using the same mini-game system. You basically drag and drop customers over to Queen and her girls, trying to get them off within a set time limit. The girls have different skill levels, but their talents are well established at the start of the game and you can't specialize them beyond where they join the crew. Honestly, there's a lot more dialogue and map navigation than mini-game or brothel management in the game.
Unfortunately, I found the game boring overall. The VN portion of the game is porny nonsense all the way down, which is no weakness save that it wasn't particularly funny or interesting. The mini-game is fine, but there's not much in the way of depth or fun. The whole game feels like a scaffold to show off the excellent art work and animations within the game, but it's just not enough to make up for the lackluster story and gameplay.