Hakunila has many popular powerful routes and pumpy traverses. The rock quality is good enough. It also dries quickly after the rain and is one of the first crags dry in the spring. The boulder is located right next to Kehä III, which leads to a very short and easy approach, but as a downside the constant noise of traffic distracts from climbing.
The most popular routes here are:
Hanoi Rocks 7A+
Blade Runner 6C
Naboo 6B
All three are greatly recommended. The rock has many traverses from 6B+ to 7B+, that can work as test pieces to improve your skills and endurance, one logical step at a time.
Block number 2 offers few routes that are easier, but taller. It's worth to check either for warm up or training. When the main block sees scorching sun during the afternoon/evening, the second block enjoys shade.