Host: Very good with communication. Stayed constantly in touch. Helpful as well. I had lost my charging wire and he was prompt to find it for me and even tried to return it to me but I had left Istanbul by then.
Location: Great. 5 minutes walk from Taksim metro station.
NO elevator. It is no problem for young people but elders or people with lot of luggage can definitely have an issue with this factor.
NO air conditioning in the one and only bedroom. No fan as well. I have suggested the host that he gets it done as it was very hot when we went in July.
Shower: Ample hot water but shower cubicle is too small. I know that I was not staying at a hotel but this one was a really small space with medium water pressure.