If there is any ideal host, that you could probably imagine, it would be JD. He was very kind and polite from the beginning and invited me with a great swiss chocolate, dinner and a map of the city, which was very useful due to the highlighted spots of the city that you surely cannot miss. JD is also talkative and we had a great conversation on various topics during the evenings. Definitely recommend to everyone ! Cheers from CZE :)