Kristl met us on behalf of Christophe and immediately made us feel welcome. The flat itself was clean, comfortable and close to a host of good restaurants. We stayed for four nights and explored most of the sights on foot from the flat, as well as making the most of nearby cafes and restaurants. It is roomy and amazingly quiet despite being so central; whilst it was too cold to enjoy the balcony overlooking a pretty courtyard, if we came back to Berlin in the summer months we would definitely use it! It was well-equipped with a hair dryer, umbrella and speedy wifi, along with a detailed guide book of the city. Overall we would 100% recommend this flat for anyone wanting to stay in Berlin.