The good: check in instructions were clear and easy. Communication was quick. The location can't be beat, as it's right in the heart of the Old City just steps from restaurants and shops, and only a 15 minute walk to Hagia Sophia. The wet-bath was no problem at all, and we had great water pressure and temperature. The AC works great, and breakfast is an added bonus. Wifi was perfect, there was great storage space for a smaller room, and there was even a mini fridge, kettle, and cups. They even offered airport shuttles and laundry service both for an additional fee.
The not so great: room #1 is on the first floor right next to the front door, reception podium, and kitchen. The window to the room faces the outdoor patio where breakfast is served. You will hear absolutely everything that goes on in this building. Just bring ear plugs. The TV signal cuts in and out, but you should be out exploring Istanbul instead :).
Overall a great value for the price and location if you're just looking for a place to sleep!