Staying at Lydia & Christian's place was an amazing experience. They are the sweetest people and gave me all the support to get to know the city. The rooms are even bigger and cosier than what it seems from the photos. All I needed in my stay was available and free to use. It is easy to go to Central Berlin (just need to take S1 and you are in Friedrichstraße). The area around the house has many different supermarkets and cafés. It is also a really beautiful place to stroll around. I definitely recommend their place, specially for those who are seeking an authentic experience (as the original airbnb idea).