Staying at Siem House has been really wonderful.. He welcomed us very warmly wanting for till midnight ...He has also been very helpful during all our presence in Amsterdam suggesting us place to visit and restaurant and bar. The house il very beautiful and worm and fully equipped .. It is not in the center but with the tram you will be there very easy... bus stop is 2 min walking.. also the bikes, provided by Siem are very useful . We highly recommend to everybody to stay to Siem.