Okay where to start ?! First of I absolutely cannot understand the negative criticism of the host. At least some of the arguements. I mean for example the point about a "noisy apartment", well first thing you are in the inner city, second thing is the appartment is besides one of the most important streets to get in and out of Prague, so what are you expecting?! A perfect modern spot which has modern windows and so on with about silence in it ?! Come on, be fair. Another argument I cannot get into is the point about the bed(s). They are hard and old, well it's used stuff first if all. And for such a price you do not even get a private room in Prague, at least in the center. And here you get a complete appartment with bathroom and kitchen a for your own, so you have absolut privacy. That's also not fair and not a point here to complain about.
Eventually you get a very nice spot and perfect located host for a good price.
PS you are at one of the biggest shopping streets in the center in less than 5 min, by feet.