The place is nice, the listing does not mention one of the best things about it. IT HAS A BALCONY. It only has enough space for the existing table and two seats, you could seat a third person inside the house. It quickly became our favorite place for eating breakfast before the neighborhood woke up and drinking tea during evenings to watch the busy street. Three levels of stairs is a bit hard on the body but worth having the balcony if you can walk up and down.
The street gives a bit of a wrong impression at first. We arrived on the election night at 9 PM and it gave us a negative vibe. It was busy full of hawkers and random people kept asking if we needed a hotel. There was this one guy who kept following us despite multiple declines from our side. Then he stayed a few meters away while we waited for Isik to let us in. He arrived pretty quickly and had family live a few meters away.
We never saw the street like that again, I guess tensions were high. It's a pretty nice and safe neighborhood. There are a lot of Arab-speaking families. Just be on the look-out for the usuals in every tourist city and don't use taxis. If you have to use Taxis, download and use the app named BiTaksi. It's similar to Uber but for Taxis. When you sit in the Taxi, make sure that the taximeter is running before they start. It should be showing 4 Liras. The Taximeter is either near the gear or the numbers show up on the rearview mirror. The app will show your route so you can figure out if the driver is taking the scenic (!!!) route.
As for Istanbul tips. Isik was quick to suggest not using Taxis, you should listen to him. We had already learned our lesson earlier during our stay. Use one of the Istanbulcards he provides (multiple people can use one) and use public transport. Istanbul has a pretty robust transit system. Use the "Trafi" app to get better results than Google Maps. If you want to buy a card, use the machines in the nearby Taksim metro station and not from random people or booths. The machines sell cards for 10 Liras. The card costs 6 Liras so you will end up with 4 Liras of charge. The booths sell cards for 8 Liras and some random guy in the Metro station wanted to scam us and sell his card with 19 Liras for 30 dollars. Each ride is 2.60 Liras (Metro, tram or bus).