About lausanne (Geneva)

Hi Lausanne community!

I am writing from Geneva where I live, because I have a friend 25 years old visiting Lausanne for a week in January . I would like to ask you tips on places to go, visit and shop:
- trendy resto, discos.
- fashion shops
- upcoming neighborhoods
- where to find latest brands/designs?
- typical swiss places to visit
- shows or festival in january?

Many thanks in advance!

Carolina