Lukas was the perfect host. At the begging we had a problem with the reservation but luckily he was understanding and he solved the situation really quickly. Few days before our trip, he answered kindly to all our questions practically at the immediate moment to have sent them.
We arrived in Vienna at midnight and Lukas was waiting for us in order to explain everything about the flat (devices, furniture, rules...). We felt at home in Lukas' apartment during our whole stay. Arriving at the warmly apartment was the best way to finish a cold and excited day of sightseeing. We could unwind playing some songs in the beautiful piano in the bedroom.
In general, the apartment met all our requirements. It was well-connected to the city centre (it took 20 minutes to get Stephansplatz by subway) and really close to the famous Hundertwasser houses (2 minutes by foot). Also it was spacious and with good and easy temperature control.
The only thing that we missed was there weren't any frying pans, only pots.