everywhere is "safe". easy to commute "everywhere"?
balconies are not overly common. they exist, but not every building as they are counted as part of the sq footage of flats.
if you don't want middle of the city, you may want to try a villa in the new territories, there are some that have small pools/gyms etc. but again, without a budget, it is impossible to make suggestions!
people can have as little as a $5,000 budget or upto over $150,000! so, without any idea, it is absolutely impossible to offer real possibilities.