New in Addis (Addis Ababa)

Hi, I arrived a week ago in Addis to stay for a couple of months (not my first time to Ethiopia though).

I am looking for any insider advice regarding life in Addis; anything that makes an expat "happy" here ;)
- nice places for food, drinks, community
- Sportive activities, even gyms
- Art exhibits
- good places to shop (from clothes to groceries)
- anything related to beauty (hairdresser, nail design etc.)
- hidden treasures to go see (apart from what you find in a guide book)
- other activities
- anything else you can come up with :)
I appreciate any hint. Maybe you'd even be interested to group up for a joint activity - I'd be happy to get to know many new people here in Addis.
Greetings,
Manuela