Not much more to add to above mentioned posts. I spent 2 years flying out of Bamako. Had a really good time there. Nice culture (lots of stories), generally nice people, and a lot of history.
Bamako's airport is similar to the ones in the rest of W-Africa; not as nice as European airports but everything works ok which is not always the case in other West-African countries.
There's a VOR and and ILS.
There's a MET office with a wx radar (very usefull during the rainy season) and you will get the METARs and TAFs if you call well in advance (30-60 mins min.).
Generally good controllers too as BKO is a training base for ATC. There are experienced instructors in the tower frequently.
Fuel is arranged by phone or a walk to the office which is just outside of the airport perimeter.
There are about 3 general aviation companies based, operating Beech 1900/Kingair/Let410.
Other than Bamako there are a few other airports in the country and a few gravelstrips in addition.
I especially liked Timbuctu's airport which is very neat (but very very quiet). If you have to go to Kayes, let them know in advance as there will be very few personell availably, especially if you have an international flight.
Other than that, the airspace is quiet compared to Europe or the USA but the amount of traffic is slowly on the increase.
Like said in the previous posts; you will find plenty of good and diverse restaurants and some bars. (Piano bar, Broadway, Savannah, Golden Hippo in the center are very nice)
You will find the whole range of hotel quality.
Enjoy!