Well, technically you can do anything you want. But I wouldn’t do that. For me a place is an exact location (and used for Google Map) . Saying it is “near” somewhere is neither part of a PLAC definition nor part of an ADDR unless (very rare) it really is a VALID / OFFICIAL part of the postal address.
If it is useful information it should be in a NOTE, i.e. ” 2 NOTE Kensington Town is near London” – which is the absolutely correct use of a NOTE – a short / brief addendum to a fact or event record.