Measures to protect against overheating in summer in Central Europe

Measures to protect against overheating in summer can be summarized as follows:

Design with appropriate sizes of window; in particular, the windows facing east and west should be kept rather small, otherwise the low sun in summer heats up the rooms on the east and west too much.
Considerable building mass: the materials in the 5 to 10 cm closest to the indoor walls are effective here.
Ventilation at night: reducing the indoor air temperature by ventilating at night, of the order of a threefold to fivefold air change.
Shading against insolation.