The room is, as pictured, fairly basic, but kept squeaky clean. I found the host to be helpful and available if you have any questions. You get a comfortable, single bed with a cosy eiderdown; your own bathroom/shower which is plenty warm and powered; a desk space and chair; and a secure locked door. Despite staying while it was snowing, the room was warm and there was a heater to use if you need.
The big plus of this accommodation is its location. You'll be 5 minutes walk from the waterfront and Blue Mosque. The Grand Bazaar is a 15 minutes walk. The Fatih region is a old town, and has a great vibe. There is much to see just minutes walk from the room. Restaurants and bars are within 100m.
I think the room is perfect for solo travellers who only need a place to crash at the end of the day - change and pack - write a few emails or Zoom with family in private. A kettle is available to make a hot drink. The WiFi works perfectly well. I wouldn't recommend it for people looking to lounge around in for longer periods - otherwise you'll find this exactly as described and pictured.