Awesome place! First of all, Raymond was such a gentleman when I arrived with my 16-year old daughter: he took my heavy bag and carried it up the 2 sets of stairs. The room, with separate toilet outside the room (but all private), was spacious, clean, light (keep the curtains closed on a hot sunny day!) and very comfortable. My daughter loved the large (rain-)shower. There is a small fridge (to put in your own drinks and/or food), a hot water kettle to make tea or soup and a Nespresso coffee machine - tea bags, coffee cups, sugar & milk is available. Great service! We loved sitting in the large open windows at night and the breakfasts were perfect for us...
The location is wonderful: it is set in 1 of the 9 streets ('negen straatjes') which is 1 of my favourite areas of Amsterdam. The restaurant next door is open from morning to late at night and the menu looked good and not expensive (we did not eat here, definitely next time). It was quiet during the night.
From here you are only a 5 minute walk from the Anne Frank Museum, the Dam (so also the large downtown shopping streets) and 15 minutes to Rijksmuseum, Van Gogh Museum and the red light district. Since you are downtown, it is great to walk everywhere, each street and bridge offers you the real Amsterdam views, feel & experience.
Be sure to go on a water bike!
I suggest you look no further and stay with Raymond - it'll feel like your home away from home :)