Blue Posts is steeped in colonial history (it's mentioned in Elspeth Huxley's 'The Flame Trees of Thika'). It has a very special atmosphere because of this and its location between the Chania Falls and the Thika Falls. We accepted the slightly sad appearance of the unmodernised rooms and the brave but not entirely successful attempts at English breakfast for the sake of the well-kept gardens, the space, the peace (with the sound of the Falls in the background), the friendly staff. The room itself (we had one with a verandah) was a bit gloomy, but spacious, with a comfortable bed and hot water in the shower. Internet access was available at reasonable rates.
(Beware of misleading maps: Blue Posts is not in Nairobi at all. It is just outside Thika - about 4 km NW of Thika centre).