I highly recommend Graham’s apartment. It is in a residential area right next to a lively business district. A 10 minute walk gets you to the Union Station metro. The apartment is super well organized. I especially liked the hanging rack for kitchen utensils. The keyless entry with a new code for every guest is very secure.
Graham is a great host with quick responses and the just the right amount of information. I plan to stay again on my next business trip if the apartment is available.