I heard that Mong Kok is a bit messy. Is that so? Also, are there any good and cheap hotels in Tsim Sha Tsui and Mong Kok?

There is no chaos, public security is very good, and mainland tourists are everywhere; The cheapest hotels are all around 100 dollars a night. I found them in Qunar.com last time, and then called to make a reservation. Of course, after going there, I also found cheap small hotels, but they are usually in alleys. Personally, it is best to stay in a hotel.