You're basically staying right next to the remains of the ancient hippodrome. There are small shops for daily needs. It's a 15 min walk to Hagia Sophia and other point of interests. And if taxi drivers are not so keen on taking you for a close distance ride, it's a 30 minute walk to/from Eminönü - while calling 153 and reporting the taxi's license plate :)
Parvin was a great host, everyday he asked if we need anything, if everything's alright with the room. Room was clean, air conditioning and mini fridge worked alright. There's an oven and a heater if you want to cook at the room. There's a balcony that you can smoke, dry your towels.