I can't say enough good things about this hotel, and even moreso the staff. It is the sister property of Four G two doors up the street. It is fairly new property and staff are really eager to make your stay satisfactory-Mehmet, Jelal and Sevde were all incredible. I stayed here 2x during my week long stay in Istanbul, on my first 2 nights in Istanbul, and then on my last 3 nights in Istanbul. It is ideally located-10 minutes (or less if you walk fast) from Grand Bazaar, Blue Mosque, Sofia Hagia and Basilica Cistern. Great restaurants & little shops nearby. If within your budget, get a room w/ a balcony sea view. Views are incredible, a great way to start the day with a morning tea or coffee. Also had balcony room on second stay with wonderful view of the Blue Mosque. Not as peaceful as room was facing the street, but very quiet (noise-proof windows). Rooms were clean and spacious (room with balcony facing see seemed slightly bigger). Traveling solo.
There are lots of lodging choices in the area, and I'm sure other hotels are great, too, but if you are considering Four-G Premium, look no more. You can't go wrong with Four-G Premium Hotel. See photo I've included of the view from my balcony of the Blue Mosque, with seagulls flying above the mosque, illuminated by the mosque's lights. It doesn't get any better than that.