Good accommodation, a bit small but has everything you need. It is very close (5-10mins walk) to Tophane station which is the easiest starting point in terms of public transport to get all around Istanbul. It is also down the road from the famous Isitklal street so there are lots of restaurant options (specifically, Bilice Kebap down the road was THE BEST meal we had in Istanbul! It was so cheap and we are foodies so we tried many places). Despite being close to all the restaurants and bars, it is also far enough away from the hustle and bustle that it’s quiet at night and you can have a peaceful sleep.
Everything you need is at your doorstep, there are a few markets nearby to get necessities, pharmacy is also just down the road, a currency exchange (doviz) with really good rates is also just a 5 min walk away. If you have any issues, just ask Kursad, he is very helpful and responds to questions straight away.
Overall, this place is a good base to explore Istanbul and is quite good value for money!