Anna's apartment was lovely. We enjoyed our stay immensely. It has easy access to Vondelpark and the trams going to Amsterdam Centraal. Maritta, Anna's friend who hosted us, was very friendly and made us a wonderful breakfast each morning. The cat, Biscuit, is pretty cute and seems to love snuggling up with strangers.
We stayed on a few warm nights and the room got really hot inside. You can't keep the windows open because of the mosquitoes and the door to the living room had to remain shut because we didn't want the cat to get in. A fan would make this much more manageable, or a screen for the window. But overall, we definitely recommend staying at Anna's!