First, this flat has a SHARED BATHROOM, shared by 4 bedrooms. It is indicated in the detailed descritpion but the room list doesn't say it's shared, whereas usually hosts in Edimburgh clearly state "SHARED BATHROOM" in the room name.
We didn't see it and it did not suit us, so we told Christiano to see if we could find an arrangement (like stay one night and cancel the second one). He didn't want to hear about it at all, was rude, and after only 2 messages started to insult us, saying we were not intelligent. His reaction was clearly rude and disproportionnate.
Plus, the sheets smelled like perspiration (the pillow cases were ok though), and we found some hairs on the sheet (pretty disgusting), showing he did'nt wash them and just hoped his guests wouldn't notice anything.
So we just left, as we didn't feel safe and welcome there, at all. This flat is clearly just a way to make as much money as possible, and there is no respect nor consideration at all for guests, who are just a money source in their eyes.
Even if you don't mind a shared bathroom, my advice is GO AWAY, there are a lot of nice places in Edimburgh, don't give your money to this obnoxious and disgusting man, or his friends.