any tips for sea locations and visits? (Hong Kong)

Hi guys,

I am in hong kong just for a couple of months and I want to make the most of these experience.
So i want to enjoy the city life but also visit some place.

I have already been in Bangkok and Macau but I am planning a trip for one of the next weekends.

Would like to go to Bora Bora but seems difficult to get there (in terms of flight availability) so I just wonder if u know any other paradise, close enough to get there with a friday flight after work and come back on sunday.

I also found some good flight to singapore and kuala lumpur but at the moment I have no travel mates, so if I have to travel on my own I prefer some relaxing destination.

Looking forward to hear for tips or anyone want to join!