I had a realy nice time at Ruud's studio. I stayed together with my boyfriend for 5 nights, and we found everything we needed - kitchen equipement, basic bath utensils and even a washing maschine!
It was enough space for us two and we were lucky to profit from the very nice balcony (which depended on the weather for sure).
Ruud was a very friendly host, flexible regarding our time of arriving (It was no problem that we were some hours late, because of problems with the trains.), generous, attentive and a nice person. He gave us some helpful advices, where to go for having a beer, watching the WM-soccer match on TV, going for eating, doing the shopping, and visiting nice places of Amsterdam.
I would fully recomend Ruud's studio as a place to stay in Amsterdam.
Thank you a lot!