Leuven, a vibrant university city with a very wide choice in restaurants and bars, is at 4 km. Perfectly feasible by bicycle (you can use ours) or even on foot. Simple and good food (pizza, fries) available closeby, as well as two one-star Michelin guide restaurants in Egenhoven, at 2 km.
There's lots of culture and music events in Leuven and Brussels.
Go to the Bertembos or Meerdaelwoud forest and 'Doode bemde' nature reserve for nature walks. 'Provinciaal domein Kessel-Lo' (8 km) has awesome playgrounds, an open air swimming pool and other activities for the kids.
Thanks to the nearby highway (1 km), you can get almost anywhere in Belgium (Bruges, Ghent, Antwerp, Namur, ...) within a 75 minute drive. Amsterdam is two hours away. Also possible by train, from the Leuven station.