I lived there for 6 months.
It is nice, pleasant, quiet, clean and safe. The security is excellent and the management staff are helpful and polite.
It has good sports facilities. Especially the outdoor swimming pool. They have a gymn, tennis courts and badminton courts if i remember correctly. Also a small park and play area for children.
It takes no time at all to reach Central on the MTR. Maybe 5 minutes on the MTR.
It is also 5 or 10 minutes walk to 2 large shopping malls where there are cinemas, bowling alleys, restaurants (McDonalds, Italian restaurants, Chinese food, Japanese food etc) and shops, basically everything you will ever need. The malls are very pleasant and safe, but a bit boring.
For a change in scenery, you can walk to Mong Kong in approx 15 minutes where it is much livelier. Mong Kok is far away enough not to cause you any worries though.
The only downside of Island Harbour View is the 5 to 10 minute walk to Olympic MTR station from Island Harbour View and a further 5 minute walk from Hong Kong Station to Central MTR station. I know it does not sound like much walking but it gets annoying after a while, especially during rush hour. In London it used to take me longer to walk to tube station but I never complained, I guess that living in Hong Kong makes u impatient and lazy.
A taxi ride home from Central will cost you just under HK$100 including tunnel fee which is ok.
Since you are going to live there with your family it will be a good choice and you will not go wrong. Only downside is the walking to and from the MTR stations. Also, you might be a little far away from the expat communities in HK, do not know if you will consider that a problem.
Good luck