I stayed 3 night with my 4 kids at Michael"s place. The apartment was clean, spacious, fully equipped, good location in terms of proximity of the metro but the district is not the higlhlight of Vienna :) ( as I did not know the city I was not aware of it) but for us it was fine, we only slept there. You can easily discover the city from here and 2 streets away there is a great market with fresh fruits and vegetables! Michael was very kind and helpful, gave me some some tips where to go, thanks again! Overall, I can recommend staying there! Michael's office is on the ground/main floor but we did not bother each other.