Add the sex and torture museum to the list. That city is Disney Land for adults.....
If you stay at a hostel, either don't take valuables with you on the trip or take them with you when you go for the day. I had a PSP when I went, along with other items, left them in the locker locked up under a pile of clothes in there. When I came back, some soldier on leave from Iraq broke the lock open and stole what I had inside.