Venice is about 5 times bigger than The Hague (Den Haag).

The Hague (Den Haag) (excluding the city's 15.68 sq km of water area) is approximately 82 sq km, while Venice is approximately 415 sq km, making Venice 403% larger than The Hague (Den Haag).
Tip: This to-scale comparison of The Hague (Den Haag) vs. Venice uses the Mercator projection, which distorts the size of regions near the poles.