We spent three nights in Guillaume's flat early December. Kleen, tidy comfortable and well furnished big room (for Berlin). Quite place. Excellent bed for two. Well situaded, 5 minutes walk from big railway, underground and S Bahn station Gesundbrunnen.Excellent connections to go everywhere. Nice guy, helpfull, conversent in F,D, Spanish and English as well. Very knowledgeable on what to do in Berlin. We can recommend and will get back in Spring.