I have stayed there for 2 weeks last month. It is indeed a distinctive experience. I managed to rent the smallest apartment I have ever been to. When I entered the room I burst out laughing at its size. There was basically nothing but a small bed and a toilet/bathroom where you could have showering while sitting on a toilet. It was definitely a memorable feeling to stay there. Every time you enter the building many (mainly Indian looking) man approach and try to sell you drugs, stolen stuff or prostitutes. I wandered quite a bit around because you always had to wait a lot for the elevator so I used the stairs to go to the 8th floor. There was piss and trash all over the stairs. At first day I was really close to changing my location but I eventually got used to the place. I have witnessed at least 3 fights during the 2 weeks staying there. On the last morning at 6 am when I arrived to the first floor after checking out I heard loud noises and when the elevator opened two guys fell inside fighting each other, accompanied by several woman shouting. I managed to step over them out of the elevator and left the building safely. It was chaotic to be honest. But at least I saw no bugs and rats. Overall I think it might have some resemblance to how it must have felt staying in the Walled City.