First of all, Erik is a great host, he welcomed me offering me beers! Then he's discrete, in his flat you have complete privacy. Position is not in the center, but with a 10 minute walk in a quiet neighborhood you are at Gein metro and in 20-25 minutes line number 54 takes you directly in Amsterdam central station. I think this is the perfect choice for a solo traveler, considering the high prices in Amsterdam center. I definitely recommend, thank you Erik!