My wife and I stayed here for 2 nights. We were travelling by motorcycle and were able to chain up the bike next to the hotel without any charge or problem. We were staying in the top room, which is a very pleasant and large attic space. Freshly decorated and very clean. Great views and everything at a quirky angle!
The stairs to the top room are very steep which were no problem for us, but might be for some.
There is a little noise at night, but the main restaurants/bars are a few blocks away so its not too bad for such a convenient and central location. Easy walking distance to all main attractions (Ann Frank, Van Gough, Red Light area etc).
The chap (Gijs) and his girlfriend running the place were very friendly and helpful. Breakfast was fine (nice coffee, orange juice and croissant), although I might have expected freshly cooked hot items to be offered perhaps.
The only minor criticism I have is that they did not make our room up while we were out.
In general I would highly recommend The Vanguard, as we thoroughly enjoyed our stay.