Regina was a great host and really helped us out a lot during our stay. She gave some great restaurant recommendations and helped us get a reasonably priced taxi to the airport. The apartment location is a bit noisy, but it was a "party weekend" (King's Day) in Amsterdam, so not a lot that can be done about it. The apartment is also conveniently located within walking distance of the train station.
Be prepared to walk up some steep steps to get up to the apartment, especially if you have large pieces of luggage!
The apartment was very clean, if a bit cluttered. We could maybe have used a couple more towels, but to be fair, it didn't occur to us to look in the big chest of drawers. There might have been more towels in there!!!