Join Date: Feb 2011
Location: "Baron of Bayside," Long Island, NY
Programs: DL-KRYPTONIUM, DL-PM, HHonors Gold, Priority Club Plat, Club Carlson Silver, Hyatt Plat.
Posts: 564
5 days and you see most of the top sights but barely scratch the surface of Istanbul. You need to choose one or the other, definitely not enough time to do both.
When I was last there in 2012, I stayed at the Crown Plaza Old Town. Reasonable and highly recommended.