My girlfriend and I stayed in Guus' apartment for 3 nights in June. The apartment is in a nice area with plenty of restaurants, and links to the tram (easy way to get around). Otherwise we found it was a pretty easy walk to the city along the canals. The room was small but comfortable, and the wifi connection wasn't the strongest in there. The tea and coffee and guidebooks were a nice touch, and we loved the amazing view from the balcony across the canal!
Guus was great in communication, very prompt, really nice guy, and always happy to help out with recommendations!