Marco met us on arrival at the apartment and ran through useful information on the apartment and area. It's great for being on the doorstep of the main sights of the old city - Blue Mosque, Hagia Sophia and Topkapi palace. We were very comfortable there with three bedrooms between four of us.
The area around the apartment is full of (very touristy) shops, bars and restaurants. We weren't bothered by any noise from the street, the most noticeable thing being the call to prayer from the blue mosque, which is no complaint!