They have breakfast on the roof, it is very nice for the price (see pictures). Location is nice, all attractions within the walking distance. Taxi from airport to the hotel - 50 TL.
I will recommend to all my friends, and if i will visit Istanbul again - i'll stay there.
The hotel staff is nice and friendly, last day we kept our baggage from checkout till the evening at the hotel lobby , no problem.
Outside the hotel there is bike rental company (you may find them on the web, the only bike rental company in Istanbul) but the city is very difficult to ride - many of the streets are steep,