Hi there
Peyia is a good choice as there is a large expat community there. It's also close to the unspoilt area of Polis/latchi where I live.
Lots of wintering Brits there - he can try the local church to meet people or just go to Polis sqare (and Peyia) to grab a coffee and just chat with othr locals. Tell him not to be afraid to just go up and talk to people - best way to meet them!
We also run a walking group in winter months - another good way to meet new people.
See the website below for more information on the western part of the island - see the walking page if he'd like to join a walking group...
http://www.cyprus-travel-secrets.com
http://www.cyprus-travel-secrets.com/cyprus-walks.html