ive never been to semarang. just went through there with bus. maybe ill try next time.
i was in bali, lombok, malang, yogya and bandung.
warning to everyone, avoid bandung at ALL costs. traffic there is MUCH worse than above mentioned cities. i mean there r alot of traffic on all those cities but with bike its manageable. i would never drive car in indonesia and be stuck...
my favorite two places r rinjani/sembalun area in lombok and bromo east of malang. its like scenes from lord of the rings movies.