Excellent location, great staff and very comfortable guesthouse
I have stayed in a few different accommodations in the Karen area of Nairobi (which I think is the best part of the city for tourists). Milimani looked comfortable and reasonably priced but I was also greeted very warmly and with the neighborhood being fenced off by a guarded gate, very secure.
Clean place, nice food, green surroundings and helpful staff - I even wrote a review on my website for the stay, it was that good - http://www.nohangingaround.com/is-milimani-the-best-guesthouse-in-nairobi/