which is the best part of Benghazi for renting a house or flat?

Welcome to Benghazi Depending on your budget the neighborhoods you'll probably want to look at are al Fwehat, al Hada-ek, and Garyounis, which are all (by Libyan standards) nice and quiet neighborhoods.
The first two are next to each other and are where most of the few Westerners here live. Garyounis is located on the coastline at the southern edge of the city. Just north of Garyounis is an area called "Taballino" which you might also wanna check out. But it's super expensive because that's where most of the rich Libyans live.

You might wanna start your search by checking this website out
http://www.libyaguide.net/home/en/index.php

Click "houses" at the top to search. Don't bother trying to narrow your search to a certain neighborhood because there aren't a lot of listings yet. Just search Benghazi and you'll be able to see all the results on a single page.

thank you very much for yr reply

No problem. If you need any other help just ask.