A truly excellent recommendation. Not a mountain like the southern slopes of Bohemia, but no less challenging. The quiet road climbs steeply, flatters, and even steeper. Since the panorama is always behind you on the way up, it's worth stopping for a few stops to admire the scenery – and no, it's not a break to catch your breath...
It gets really sporty if, after a short descent, you either add the climb to Schneeberg, to Tisa, or up to Adolfov. This way, you can gain almost 1,000 meters of elevation in a relatively short distance. Conclusion: highly recommended.
P.S. For the approach to the climb – the main road out of Decin offers a homeopathic cycle path.