My fiancé and I had an absolutely wonderful stay.
Alex was a wonderful hostess and made us feel very welcome. She had great recommendations for restaurants and even gave us a late checkout to accommodate our evening flight back to Copenhagen. The apartment is warm and welcoming and we love the feeling of staying in an actual home and not just a rent-out apartment. The bed is super comfy and the yard exquisitely green and beautiful. The apartment had everything we could possibly want and need during our stay. The neighborhood is great as well with lovely cafés and restaurants, parks, and shops but is still outside the inner (read: super touristy) part of Amsterdam.
All in all I highly recommend staying with Alex in De Pijp.