We had a family holiday (ages 25-77) in Istanbul and spent 5 days at Hotel Azade.
Location: We chose the hotel based upon it's location and were not disappointed. The hotel is in the heart of the old city - literally a 5min walk to the Blue Mosque, Aya Sophia, Topkapi Palace and other 'Istanbul Blockbusters'. Azade is perfect for those wanting to explore the city and soak up Istanbul. The hotel is also one street away from lots of restaurants and bars (but far enough not to be bothered by noise). It is possible to take the tram to destinations slightly further afield (5-10min walk to tram stop) or taxis can swiftly whisk you anywhere. There is also a bazaar (Arstaar Bazaar) close to the hotel which our party frequented. The area around the hotel (and Istanbul in general) is also very safe.
Room: We took a double room and a junior suite. Both were of a good size - note the suite can easily accommodate three but four would become a bit of a squeeze. The beds were all comfortable (including the sofa bed one of our party slept on). Cleanliness, fresh towels etc... was not an issue - room service did a very thorough job each day. Room contained standard amenities - ironing board, kettle etc... Minor point: a couple more plug points would be good, at times the iPods, phones, cameras, laptops, toothbrushes etc... were vying for charge space - or perhaps at fault here is the proliferation of gadgets! Wifi signal in the room and throughout the hotel is good.
Service: Eda, Ahmet and the rest of the team at Azade are genuinely friendly, very accommodating and helpful. We had some *very* demanding people in our group who kept badgering the team with requests/questions all hours of the day and night - they were always able to deliver and we cannot fault the service provided. If you don't speak Turkish or fancy making bookings - e.g. taxis, boat cruises, dinners, shows - then the team will helpfully arrange all this for you, which they did for us many times.
Breakfast in the morning on the rooftop terrace is amazing - the views over the Bosphorus are stunning, there is also a good selection of foods (Turkish, European and fresh fruits). It is also possible to go up to the terrace outside of breakfast times to smoke, read or just take in that gorgeous view. Azade doesn't offer any meals apart from breakfast, we thought they were missing a trick here and offering a lunch, dinner or even just coffee service on the terrace would be very well received by guests.
Overall we had a very enjoyable stay at Azade (and Istanbul - fantastic city!) and have no hesitation recommending it. In fact we hope to come back and continue exploring Istanbul.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.