All recommended hotels are subject to availability. Especially hotels in old town have limited capacity.
For further hotel options in Istanbul, please visit e.g.
http://www.tripadvisor.com or http://www.booking.com.
Location: Congres center is in within walking distance from Beyazit, Sultanahmet, Laleli and 5-10 minutes by taking metro line (Vezneciler-Taksim) from Taksim, Istanbul city center.