We very much enjoyed our stay at Albert's place. It was tidy and cozy and very private - apartment is divided into 3 separate, fully indepentdent parts, and we could not hear a thing from the other 2 even though there were guests present.
Room had all necessary equipments and was conveniently located right next to tram stop and not far from train station and city centre by underground.
Even though our train was delayed Albert's father waited to let us in and showed us around.
All in all - highly recommended for couples that look for a place to explore Vienna from.