Lukas's place is really beautiful, comfortable and convenient for getting to the city centre. It is just 10-12 minutes walk to the metro station U1 which goes to the city centre and all other places with easy connections to the airport and a few metro stops from the beautiful Danube river. Metro ride from the city centre lasted 15-20 minutes and cost only €2.40. Quite important that the room is in a 3 bed clean flat with a shared bathroom and kitchen, which were always clean. The room I stayed in was spacious and had three single beds and a comfortable corner sofa.
Apart from that there was no iron when I stayed there (I had an important meeting that required a polished look) and that I couldn't instantly heat food or toast bread (which of course can't be an issue to every guest), the availability of an electric jug and a coffee machine made up for this.
The neighbourhood is very nice and has a number of supermarkets and a small mall nearby. Lukas always communicated instantly. I was the one who couldn't get back to him quickly with my arrival time because I was travelling with a group so I had to wait until were given our exact travel times. Thanks a mil Lukas.