It's nice place . For the first timer if you are walking to the place(around 500 m) from the nearest metro, you(if you are with family) might feel some route a bite deserted and dodgy , but it was safe. Its a real value for money place to stay comfortably with walking distance to almost all important attractions. The house was really warm (we went in winter) and clean with all required amenities. As the name suggests , do not expect the feeling of a AirBnB home concept, it's more of a service apartment. Host was really kind , pleasant and helpful. There is super market quite nearby.
Other points to note , do not relay on Uber or Bitaxi they accept but they do not come, we had to wait for 15 mins and then he cancelled . There is a taxi stand quite near where you will always find taxi. Very rarely they follow meter , they generally say a fixed price . Get an idea of the taxi fare from the host before you take a taxi so that you have an idea.
Overall we had a nice experience in this home and Istanbul.