Stayed here for 2 nights. A 10 minute walk from where the airport bus drops you off, and a short walk to Taksim Square, the Metro station and the starting point for the Big Bus city tour. If you turn right outside the hotel, you are a short walk away from a network of small alleyways containing a number of great bars, restaurants and cafes, most of them very reasonably priced. Rooms are small and basic, but comfortable nevertheless, and was very happy with my stay.
There was a bit of noise from the streets below, but not outrageous and nothing that can be done, so was happy overall.