The apartment is exactly as described, spacious and tidy, with everything you need. The staffs are friendly and helpful, they gave us some good advice in discovering the area. It's not far from the taksim square, around 10-15 mins walking distance, some local bus stops are also close by. The apartment is located next to a busy street with a lot of traffic and some night clubs, which can be noisy until late midnight. You need to choose carefully your route to go back to the apartment after 10, if you don't want to be disturbed by people who works for the night clubs.
In general I like the stay.