Martijn &Betina's place is wonderful in every aspect that I can tell you as a traveler. I came early before noon and they allowed me to check in early. I was lost in my direction and Martijn came and get me home. They responded to messages in a timely manner. The room, to my surprise it was upgraded to a bigger room, more beautiful than a picture, added with a lovely fresh tulip flower giving wonderful scents to the room.
My first night to sleep on the mattress and pillows, I was reluctant to get up. Everything was so comfortable!
Bathroom/toilet is shared with the owner but trust me it's sparkling clean.
I forgot my mobile charger and they borrowed me one. The internet wifi speed is fast. They have a small lovely dog called Lucky. The dog is very friendly, she is not capable to bite anyone in case if you are not a dog person. There's coffee maker in the kitchen that they shared. We had lovely wine on my second night with this super friendly hosts. The location is central and close to everything. Plenty of shops and restaurants around within walking distance. Take bus 21 to the Amsterdam Centraal for less than 15 minutes. The public transports are fast and systematic. I bought 3 days pass and use the card for all transportation. On my last day the card was expired and Martijn help to drop me at Amsterdam Sloterdjik train station. I highly recommend this place and definitely will stay here if I come back to visit Amsterdam in the future.