Everything was o.k. - the location of the flat was perfect for reaching all locations in the center and of course for getting the early Eurostar to Brussels. Check In with the door access code was easy and safe. Even the shower is fine. The steep steps common in many London houses should be taken into account by those who are not so good on foot. You shouldn't have a problem with noisy streets - but you are in the middle of the vibrant London city life...