I found the W Hotel staff and management to be extremely pleasant and friendly at ALL times. I arrived at the hotel 2 hours before my check in and they were able to accommodate me with a room that was ready. The concierge was very helpful with my many inquiries.
The actual rooms are great - the perfect size and super clean. There is a bit of separation with the bathroom (shower, sinks and toilets are in separate rooms) but it didn't bother me in the least. The shower was large and I loved the Bliss products. The beds are comfy and it was very quiet at night.
I loved the hotel's neighborhood because it was beautiful, clean and quiet. You felt like you were out of the hustle and heat of the city. At first I was concerned since it's not very close to Sultanahmet and the major sites, but its a short and affordable cab ride away. (I personally found the tram to be reliable as well). This hotel is walking distance to Nisantasi (Istanbul's version of NYC's Soho) and to the Bosphorus. Conveniently close to supermarkets, shopping, restaurants and cafes. If I go back to Istanbul, I would definitely stay at the W again. My only complaint was that my breakfast was not included, when I could have sworn it was at time of booking.More