Wonderful experience. The apartment is very nice, with large space, big windows that allow entry natural light. The apartment is very close to the bus stop and train station.
If you arrive at Tegel Airport, the trip to the apartment only takes a few minutes by bus you don´t need to take a taxi.
About Luoi, He is a great person, overall. He was always in contact awaiting my arrival, even I took too long to arrive and He waited to give me the keys. His explanation about the apartment was very useful and he was very kind to inform me all about how is the public transport in Berlín.
I strongly recommend this apartment to get holidays or a business trip.