Lovely place right in the heart of London. Location simply could not be topped, you're steps from Trafalgar Square and the London Eye, with two tube stations within a 3 minute walk and Covent Garden within walking distance as well.
We were a family of 4 with kids aged 8 and 5, and the place was perfectly sized for us for a 4 night stay. Very clean, had a wonderful homely feel to the place, and on a quiet but clearly safe street. The laundry is a washing machine only (no dryer), but hanging our clothes out to dry was actually quite fun and different.
Nicholas was great and very responsive throughout. The steps to the unit were expected but arduous at first, and then something we came to enjoy during our stay. Would highly recommend to anyone.