This apartment is in the BEST LOCATION. It was very easy to take the tram or walk across the bridge to the Sultanahmet district (where the Topkapi, Hagia Sofia, Blue Mosque, Market, etc are). The ferry to Kadakoy is just a couple blocks away. But the best part is then being able to leave the more touristy areas and eat dinner with the cool kids in many of the neighborhoods that are right around the apartment. Everything is right there.
The apartment itself worked great for me, my husband, and two kids. Enough space that there's a little more room than we would have had at a hotel. If you're a princess sleeper, it might be a little loud, but you can't stay within walking distance of anything fun and not expect a little noise. Plus, if you're in Turkey you have to get used to the prayer calls anyway.
Our hosts where super responsive and helpful with transportation tips and checking in. They also provide tons of wonderful recommendations on what to do and where to eat.