Sorry that you had problems finding the place and all.
As I can see, most of your problems are related to external factors, which as you can imagine, is not in our control :)
I wish you would have called us or used (Hidden by Airbnb) maps to find our place, we believe the directions we give are quite specific (we give the apartment number after all).
We give receipts to our customers as well, maybe it was because it was late, our guy forgot to write you one. You could have just asked and he would have provided you.
And about the 'private room' thing, yes, airbnb does not allow us to post ads as 'hostels' so private rooms are the closest option.
In all fairness, the neighborhood is pretty nice, but it is true that there is one 'red light district' kind of street nearby. It is not dangerous though, but I can understand why you were scared.
As you said at the end, this is a hostel, and we believe that for the price people pay, the service we give is quite extraordinary.
My suggestion would be that next time you make sure that you know what to expect from the place you stay next time. Because as you said
Place that empties your wallet = More luxury (but not necessarily more fun)
Place that does not = Less luxury.
I find it my fault that I did not inform you well about the fact that we are a hostel. But honestly, I thought you knew that this place was a hostel.