Wow what a difference after the Hiton debacle (see my review on that place for comparison). The Sankara is located in Westlands which was perfect for work. The location is reasonably central near Sarit center which makes is pretty convenient for everyday essentials.
The whole experience was excellent from start to end. Other have already commented on the rooms and I can confirm that they are finished to a very high standard so no complaints there. I booked a transfer from the Airport and it was brilliant. They picked my up in a nice big car ;-) but to my surprise the check in was actually in my room! I have travelled all over the world and this is my first experience of room check in and is definitely something I could get used to!
The restaurants are great and serve good quality food. The place is well secured and the staff were all excellent. There is well equipped gym on the top floor and well worth visiting as Nairobi is pretty high altitude so you'll get a decent work out without too much effort!
I would not hesitate to stay here again and hope other large chains follow it's lead and provide good value for money which is more than can be said for others.