Onnela is situated about 10km from city center and about 20 km from airport.

Map of Dar es Salaam

 Onnela is on right top! Turn after bay to right. Then Kenyatta Drive until first turn to right Toure Drive. Then just drive until You see big hotel Sea Cliff and Sea Cliff Village. Just after that is turn to right Onnela. Taxi from airport cost about 15.000Tsh. Negotiate price first!
Map of Africa  
Bigger picture of Dar es Salaam center (about 200kb) After police station and bay After Finnish and Danish residencies turn right