There aren't many places in HK - and very very few on HK island - which would be considered unsafe to live. Unless you're a long way up the hill, you're unlikely to be more than 5-10 minutes walk away from a supermarket and a train station - certainly, along the main road, if you're more than about 10 minutes away from the MTR, you'll be something like 10 minutes from the next one instead. I lived for quite a while in North Point, quite close to Tin Hau, and I've had friends living there. It's a perfectly reasonable neighbourhood, very convenience for 'town', but slightly cheaper because it's out of the commercial districts.