Very easy and personal check-in/check-out. Great clean apartment with all key appliances and kitchenette, extremely well located. If driving there, note that it is in a CPZ 8.30am-10pm MTWTF and 8.30am-1.30pm Sat. Check out JustPark or similar for parking during CPZ hours.
Be prepared to walk up stairs (but that is to be expected when staying in central London).