Eminonu's place is great to stay while in Istanbul. The neighborhood is quite nice and there are many local shops in the lane which remain open late nights. It is a safe neighborhood so even if you are coming late at night you don't have to worry. Taksim Square is in 15 min walking distance but if you have lots of luggage then it might take you few more minutes to reach there.
The place is as it shown in the pictures and the building is also safe. The host responded very quickly and he provided all the help we needed on time.
Bus stops and metro stations are also in walkable distances. And you can find lots of cafe and restaurants once you come out of the street to the main road.
Overall stay was comfortable and we enjoyed a lot.