Stayed at this property for 4 nights during our trip in Feb'13.
They are just fantastic. And I'll explain why.
First of all, they are located in the heart of the old city and walking distance to all major attractions. If you forgot something (camera battery or cash) you could be back here in minutes. If you have young kids who need a break from hectic sightseeing, you could again get here in no time.
The staff are great - or any other superlative you may want to choose. They are very personable, always eager to help, go above and beyond all the time to ensure that the guests are comfortable and are having a good time in the city. This is literally everyone from the cleaning ladies to the CEO who is a hands-on person himself.
The rooms have a traditional decor but have all the modern amenities. I have not experienced such a great shower even in North America or Europe elsewhere.
Wi-Fi connectivity was seamless and we felt 'connected' all the time when we were at the hotel.
Finally, the breakfast buffet was spectacular; amazing variety, very hospitable kitchen staff, and great views of the Sea of Marmara.