Jo was amazing. She is about a 10-15 minute walk from the city center, and about a 5 minute walk from the zoo. We found it to be a perfect location for our adventure.
The room was beautiful and had nice touches like coffee and tea and she even had a cold pitcher of water waiting for us when we arrived. The garden in the back is also a nice touch.
Jo herself was a great host, meeting us when we arrived and pointing out potential places of interest and even loaned us a power adapter to use after I left ours on the train.
Overall I highly recommend staying with Jo when you are in Amsterdam.