Amsterdam is superb. It was so nice after long days of exploring and walking around to come home to a cute little flat, where we could rest and enjoy ourselves. For the price, this place is wonderful and my wife and I would highly recommend it. This one room flat felt like you were crashing with a college buddy. While it was not luxurious (functionality in the furniture and decor was clearly the priority) it had nearly everything you would need (a gas stovetop, sink, fridge, hotpot, dishes, a small TV, couch, coffee table, table, queen size bed, and a private shower and toilet).
Also, Jesse and his mother were incredibly accommodating and hospitable. For example, we checked in late, but Jesse's mother had emailed us all the information we needed and texted with us to make sure we were settled. She had laid out lots of brochures, all of the information we would need (wifi (which was nice and fast), transit, and so on).
The only word of warning I would give is this: The apartment is located on the fourth floor of a building with very steep steps (and lots of them). If you have trouble with steps, you should look elsewhere, otherwise, it's fantastic for the price.