Sebastian is a fantastic host and responded to all of our needs within minutes. We loved the flat's location near the U6 line and could get anywhere within central Berlin in no time - even with a toddler! There are 4+ flights of stairs to climb, so guests with small children, limited mobility, lots of luggage, or a fear of heights - be warned! You can find most of what you need in the immediate neighborhood and the rest can be had within a stop or two on the UBahn. A very comfortable stay in the city. Thank you, Seb!