Moldy walls!
The first impression of the apartment was really good, after taking a closer look we saw that it could have been cleaner but it was alright. But after moving the curtains we saw that the whole corner of the wall next to the bed was covered in mold!! Not just a little bit, but the whole corner from the floor to the top and quite severe.
We felt really uncomfortable sleeping right next to it, so we deciced to cut the stay short (1 night instead of 4) and book a different Air bnb.
I told Ismail about the mold and asked if we can find a solution, maybe move to a different appartement of his (he rents out multiple app. in the building). He said that someone would come over the next day, but didn't even apologize. I called him the next morning and we quickly agreed on a refund for the rest of the nights.
Overall this app. would have been really nice, with a great location next to Taksim square but the mold was a No-Go!