Here's how we dispose of our waste.
Separation of waste
Regular waste & plastic goes in the main bin in the kitchen (plastic is separated at the waste processing facilities in Utrecht). Bio-waste can be disposed of in the large bin in the garden (green lid). Paper can be disposed of in the blue-lidded bin in the garden. If you want to know more about waste processing in Utrecht, see utrecht.nl (in Dutch).
Underground containers
To dispose of the wastebag in the main bin in the kitchen, you can throw it in one of the underground containers in the neighbourhood. The closest ones are circled on the map. If you stay only a short while, this is likely not necessary; in this case, don't worry about leaving a half full bin behind!