It's a very good place to spend a couple of days in Istanbul.
The apartments looks bigger on the photos than it is, but it has everything you need: appliances to cook, wi-fi, fridge.
It's is neat and clean and very-very warm (we've been there in December). And the biggest advantage is a place: 5 minutes to Istiklal street, 5-6 minutes to Galata tower, the area around is full of cafes, restaurants and very cozy little shops. In 50 meters downstreet there is a little supermarket when you can buy delicious local greenies, cheese and yougurt.
And the owner is very involved: he answeres messages just in minutes, and when I had an issue with the washing machine (couldn't realize how to use it, I don't know turkish and actions were not obvious) - he helped me very soon. And the self check-in option is very convinient, the owner provided detailed instructions.
Anyway, it's just a perfect place to spend several days there. The best option for that price.