Tugba and Aytac's place is in a very authentic area of the city, and personally we liked that, and the area is friendly and interesting and transport is easy and frequent on the buses. The flat itself is clean and simple and whilst it may seem basic to some, it depends what you want, it offers all you need when you are out a lot (just remember to bring a universal plug - that's common practice in many houses in Turkey - and other countries). Also be aware that the flat is up a few flights of stairs.
Although it was quite late, on our arrival Aytac walked my sister and I to the little shop where we could get an Istanbulkart the next day for our bus journeys and showed us where the bus stop was. Travel was far easier than I worried it might be and buses were frequent and the kart made it very easy. There were several that went there and in the flat there was a little folder with advice about the numbers and other helpful suggestions about where to eat etc.
We ate in the area - there is a good restaurant nearby and lots of small places, and we easily bought some food to eat simply in the flat. I felt confident that if we had any problems or questions then we could contact Tugba and Aytac and ask. I can happily recommend this Airbnb, and thank my kind hosts.