Owner Paul has created a wonderful peaceful retreat from the Nairobi hurly-burly, with its romantic and luxurious tree houses, all different and widely separated for total privacy. The lodge is set in 10 acres of private land in the Karen suburb of Nairobi, near what used to be Karen "Out of Africa" Blixen's coffee farm and Nairobi National Park.
We stayed on two separate occasions, first on arrival in Kenya and then again before departure. Both tree houses had large wooden boat-baths and the second had a boat-shaped bed as well, complete with porthole lights! Rooms are spacious, with sitting space inside as well as an outside deck. There is wireless internet throughout, free of charge, though the signal can be erratic. There is also a small swimming pool.
As the weather was fine, the excellent breakfast (with very good coffee) was served in the pretty garden. Dinner is served in or around the main house, next to log fires when the weather is cool. The food is well cooked, copious and beautifully presented. Mary, the manager, was charming and all the staff were friendly and helpful.
A taxi to/from the international airport takes about 40 minutes, depending on traffic. To Wilson airport (for domestic flights), it takes about 15 minutes and to the city centre about 20 minutes. Ngong House has its own transport but will call a commercial taxi, which is normally cheaper. Good places to go locally, apart from Karen Blixen's house, are the elephant orphanage set up by Daphne Sheldrick and the Giraffe Centre, where you can feed endangered Rothschild giraffes.
One point to note: Ngong House does not take credit cards (we ended up paying by bank transfer after our stay).