Very comfortable stay. Wonderful location, close to Levent business center (15 min walk, 10 min to the closest subway station), but very lovely and quiet neigbourhood at the same time. Clean apartments, fully equipped with everything you may need (even the sports equipment which I enjoyed very much :) ).
Bilge is very responsive, friendly, speaks English fluently.
I highly recomend staying here while on a business trip or when traveling (however, Levent is more for business not for sightseeing)