Many of the travel guides and travellers' reviews mentions the Norfolk as THE hotel in Nairobi. This is possibly true because of its past history as well as its current state after its renovation.
The perfect place for a soft landing into Africa at the beginning of a safari (as it was our case) or a good place for a last night stay after a sucessful trip. It is at a - safe - walking distance from the National Musem.
Pros: The relaxed, secure and elegant atmosphere in the middle of Nairobi, the rooms, the terrace and - above all - the breakfast. It would tick all the boxes you look for in a 5-stars hotel.
The warmed swimming pool is also very nice if one arrives from an int. flight
Cons: Nairobi seem to be incredibly expensive and the Norfolk is not an exception. If you can secure a good rate it would automatically deserve a 5-points rating.