We are pleased with our stay in Kemal's apartment. We didn't have the chance to meet him in person, because he was out of the city, but his house lady was very helpful and attentive. We only had an issue with the warm water occassionaly, but we just had to restart the water heating system in order to make it flow again. Location is perfect, few metro stations from the city center. Also worth mentioning are the comfy sofa beds. Recommend it to anyone willing to visit Vienna.