A shuttle service from istanbul or Sabiha  airport to hotel is available  and 60 eu extra fees till 4 person per way and times. 
Bosphorus Cruise Tour

Highlights of This Tour:
A leisurely cruise along the fabulous Bosphorus, starting near the Black Sea and taking us past Ottoman palaces, wooden 19th century waterfront mansions, modern pleasure palaces and fortresses. The perfect opportunity for taking photographs along both shores of this fabled waterway.

Halfday Afternoon - Itinerary:
We drive to Sariyer, a charming fishing village located on the Bosphorus near the Black Sea, from which we embark on a cruise.

ISTANBUL