Abidjan is like any other large city in the world where common sence can keep you out of trouble.
The Ivory Coast has been my second home the last 6 years and I feel safer there than most other African countries I've lived and work in.
Any of the major hotel groups Sofitel, Novotel, Hotel Ivoire, Ibis etc is still up to standard.
More expensive than most african countries but there are still some excellent restaurants and clubs.
Try to stay in and around Zone 4. Most of the nicer places (expats) are there and you will have less police check points to cross
It is a plus if you speak basic french
Hope this will help you