We stayed 2 days at Tugberk’s house stationed at Feneryolu Street and house is exactly opposite of Marmara University. ( This might be good for explaining where you want to go to taxi drivers) Also there is a minibus in front of Sogutlucesme Metrobus station directly goes near the house.
His place provided everything for our needs. Clean towels, bedroom stuff, kitchen stuff all works and clean. In the house iron, TV, microwave even coffee machine exists. I strongly recommend visitors who visit Istanbul, for sight-seeing or other reasons.