Although it was my first time at using a Bed&Breakfast service (and for that I may be kind of biased), I would like to say that Elmar is indeed a very good person. He actually understands what you need and adapts conveniently (in my case, I needed to cook special food and he just let me do everything I needed).
My reason for choosing his apartment was firstly because it was close enough to the center (aprox 15min by bike) but still close enough to a train station (Sloterdijk) which is very convenient. I also wanted a place to stay for 11 nights before I moved into my residence the 1st of September, so it was nice having it closer to the residence as well.
I liked his idea of "please feel as if this were your home", because you can really feel at home there. I even got a weekend when he wasn't at home).
The room is spacious enough for 1 person (but 2 people do fit in there). He is a talkative, fun, and intelligent guy, so don't be afraid to choose his appartment because it is really worth it.
If I ever have to go to Amsterdam again, I will definitely consider visiting Elmar's apartment again, specially because it is very nice.
Thank you, Elmar!
P.D. Beware with the bike. I though it didn't have hand-breaks, but later on discovered that "Dutch style" bikes have them actually on the pedals (you have to pedal on the opposite direction to stop). With some time you get used to this, and you really enjoy being able to carry an umbrella without having problems with how to stop the bike.