I just booked the hotel 15 minutes before my flight. When I arrived in Istanbul, I saw Parvin accepted my request. In special cases and for questions he wrote he also mentioned his own number. It was just 2-3 minutes to train and Taksim Square., location was really good, unsafe place. The stuff was really kind and helpful. Maybe the hotel was a little bit over my budget, after 3 days I used to stay other hotels in the Center of Taksim Square, but I had a really bad experience about the noise, safety and cleanliness. Please, before booking any hotels, read the reviews. Istanbul is really dangerous city.
Thabk you to Parviz and the stuff for good accommodation!