I had a great stay at Aletta's place with my two teens. Apartment is as described and the pictures were accurate. It is small but had everything we needed.
Check in was really easy, with lots of helpful advice from Gep on places to visit, local supermarkets, transport etc.
The apartment is in a really great location. 15 mins walk to Anne Frank House, 15 mins walk to Vondelpark. Being on the top floor, with no bars/restaurants underneath it was really quiet.
Terrace was a welcome addition as it was hot the day we arrived.