This place was charming and lovely. Here are a couple of details I think people should know:
1. The stairs are very very steep, though I think this is common in most houses in Amsterdam. They would certainly present a challenge for some people.
2. The layout of the house is this: there are 2 bedrooms upstairs, as well as a very large bathroom with a tub, and separate small water closet. All of these rooms connect to a hallway which is open to the downstairs where Sem lives. It didn't feel private, even though I knew Sem was perfectly respectful. Some people like to walk around their house naked. Sue me.
3. The location is GREAT. A very short walk from so many great sites to see.
4. There were some noises from both above and below at times, and sometimes past midnight.
5. Sem was a good communicator at first, but didn't reply to several of my messages during my stay. Others have listed him as a great communicator, so perhaps it was just a busy week for him.
6. The shower lacks a shower curtain, and thus water spreads everywhere. This makes it challenging for multiple to use the bathroom after someone takes a shower.
7. If you are visiting in the warm months, only one of the two rooms has an air conditioner, and it's a portable unit, right next to the bed, with no dedicated vent to the outside.
Though this might all sound critical, we really had a lovely stay and very much appreciated the charm of this place. If you need a two bedroom place in AMS, I would highly recommend it.