First of all Rifat is the best host you will ever hope to have. He is quick to respond to any questions or need you have. The place is well situated with the Sultan hamet (blue mosque), hagia Sophia and Topkapi palace close by just a few mins walk.
Istanbul is really fascinating with it's story. You can get a museums card for all your visits. Also get an Istanbul kart for all publictransportation. Will surely be visiting again and staying here again.