I was at work. The hotel is decent, right in the historical center of Istanbul. I was pleased with the organization of conferences in a special hall (we spent two days at work). We took a guide, everything is within walking distance from the hotel, it was very informative. The hotel is certainly not cheap, but the location is great.
A hotel with very good sound insulation of the rooms! The air conditioner and the rest of the equipment worked fine. The breakfasts are monotonous, there are few vegetables, no meat and porridge at all, but a lot of pastries and cakes. Overall, I am happy, I would stay there again.