Szycha.
Great.
Bahria is a world in it self. There are lots of Europeans and eastern Europeans working for Bahria group.
Please note the following points:
a) Some of the European embassys raise an un necessary hype about security issues which will create tension. You should be your own judge to draw a line between what is necessary and what is comfortable.
b) Your wife will feel good in dresses which are less revealing to prevent unwanted attention in public crowds, Pakistan's national dress salwar kameez with head cover is ideal for this.
c) Karachi beaches are over crowded over weekends so choose week days with groups and security.
d) You will initially find it strange to have lots of arms and gunmen around, you should soon learn to ignore them, they are just there to scare bad guys.
e) You will be provided with a driver and will not be expected to drive in Karachi. You will soon know why.
Whatever time you are going to live in Pakistan for, I feel it should be a wonderful opportunity for you and your family to know Pakistan's rich culture, religion, music , food and tourist resorts in the north of Pakistan. 