first when I came I clearly didn't know where the hostel was. it says on 13th floor and also 11th floor. both I cant find any sign of castle inn. all I found was guangzhou 2 and swiss hostel. and as I knock on the door no one was in the reception. thankfully there was someone helped me calm the number from the app and then someone came from the elevator and open the door for me. I was almost scammed by some hostel next to it. claiming that they are castle inn but they want to charge me more!. next time please put the detail clearly, and castle inn is swiss hostel!