You' re in the hall of the Istanbul's hotel [#136]. Go to the dining room and take a knife from the table [#137].
Talk with a waiter [#138]. Now you know that the old citadel that you want to go is probably under the Topkapi Palace. Talk also with the receptionist, and she will tell you that actually in the Palace is going on a symposium and only the invited diplomatists and the press agents can go inside [#139].
Near the reception you will see a map [#140]. Look at it precisely to know large zones of Topkapi Palace [#141].
Go through the exit door [#142] and using map go to the Topkapi Palace [#143].