Brilliant place to stay, 30m from the mid point on the main tourist street where EVERYTHING happens. Go to the main street and turn left to walk up to Taksim Square, turn right and walk towards the Galata Kulesi and from there down and across the Galata Koprusu bridge into the old town, spice bazaar, grand bazaar and all the ancient sites. Its only about 100m from the Sishane metro station, from where you can travel to virtually anywhere in Instanbul. Security is strong because the apartment is almost opposite the Russian embassy where there is a big police presence. Just be aware that this area of Istanbul never sleeps, there is a cacophony of noise all night from nightclubs, street musicians, people being loud, bin lorries, etc. Take some ear protectors if you are a light sleeper. Also, if you have difficulty with stairs, the apartment is up two flights of steep circular steps. The facilities are everything you need for a short stay; air con, fan, shower, kitchenette, TV, WIFI, fridge, work space, etc., all perfect and newly upgraded. Siri and Paul are lovely, very friendly, great communication, helpful and very quick to respond, excellent hosts.