Carsten's place is really centrally located. I was impressed by his perfectly located flat! If you are decently fit you won't need to take any metro/bus to move around the city centre and its surroundings (exception done to reach the airport). I did not meet Carsten in person. I was welcomed by his brother instead. He is a nice and friendly guy willing to help and he leaves you enough space. I liked my stay in Carsten's place. In fact, I was gladly surprised to be allowed to use the kitchen and all the cutlery to prepare a quick meal. That was highly appreciated! Nevertheless, I have to admit that there was a little flaw: I was assigned a different room from the one I booked. Although, I did not have any complaint; I must say that for smoothness of communication that should not happen. Also, the apartment is not noisy but one night two other guests were particularly noisy! Of course, this could not be the hosts' fault, but checking on the guests is important too! Overall, I think that the flat was a good compromise and I'll recommend it!