Guus's place was amazing and we had a great time staying in there. The apartment was as described and even more beautiful and charmer than in the photos we've seen. The neighborhood is quiet and you'll find whatever you need just around the corner (there's a market everyday just 2 minutes walking, shopping area in Ten Katestraat and many places where you can eat like de Foodhallen). Well connected to the centre with the tram but you can also be at Dam Place in 20 minutes if you like to walk and see the city.
Guus and Ilse were very helpful and they leave a couple of pages with recommendations for places to eat, visit, rent a bike or whatever you would need.
To sum up, all was perfect.