One way to get to the cache, is simply to follow the marked trail #1 that starts behind the restaurant 'Sestinski Lagvic'. After 45' you'll reach another resting spot called 'Kraljicin Zdenac', and follow the trail further up, towards the hotel 'Tomislavov dom' just below the top of the mountain. Other way is path 52, so called "HPD way".
No special views or anything at the spot, but the visit to Medvednica is rewarding by itself. On a work day, you might encounter some roes too. Go on to the peak of the mountain, and consider a hike to visit some other nice lodgings - 'Puntijarka' and 'Hunjka' to the East, and 'Graficar' and 'Risnjak' to the West.
Medvednica is covered with trails - marked and unmarked, so if you get a good map, it is a hiker's paradise. The spot should be accessible by mountain bike too, we didn't have the chance to try it, but surely NOT by the trail mentioned above. p> [The cache is located in the vicinity a group of ruined buildings called ]'Brestovac', [which is the remains of a tuberculose sanatorium, dating from the beginning of the 20th century.] Brestovac is accessible in many ways. There is a road leading to this place, that branches off the main "uphill" road to the top of Medvednica. The uphill road (a one-way road - uphill only) starts from 'Gracani'. The rest you'll have to figure out yourself.[ MTB-ers could use the ]'Leustek' and 'Omladinska'[ trails. But keep in mind that these are CROWDED during weekends, and NEVER use them for descending - use the "downhill" road instead.]