I enjoyed my trip in Turkey. The house is near of An adorable mosque of Fatma Sultan .If you want to go to Fatih square you need just to take one bus .For taksim you need just to take two metros or two trams or just one bus( you can use google maps to know which metro or which tram to take ,it really help+ you need to buy Istanbulkart wich you can use for all types of transport in Istanbul).The house is near of bus station which facilitate the transport.Thanks a lot Umut ,Merve and Nazim for your help.