We had a great time in Amsterdam and this was partly due to Carolien's apartment. While we did not meet Carolien, her friend Patrick welcomed us.
Pros:
-The apartment is very well located. 5 min walk to the metro station that will take you to Central Station in just a couple of minutes. Also, you are very close to a big grocery. Only a 5 min walking distance.
-Beautiful view on the Amstel river.
-Calm neighbourhood.
-Very clean apartment and really comfortable.
-Well equipped for cooking.
-Wifi works like a charm.
-Very spacious for 2-3 people.
Cons:
We spent 7 nights at Carolien's apartment (located on the 2nd floor) and the partying that was going on, on the 3rd floor was really annoying. It only happened on Friday and Saturday though, so the rest of the week was quiet.
Overall, great communications (via e-mails and the AirBnB app) with Carolien, nice and very well located apartment. I would go back, but not on a Friday or Saturday night :)