Traveling to London for 3 nights 2/13-2/16. Would love to stay in a cozy B&B on outskirts of central London, but still accessible to train transit into and out of the city center (max 30-45 minute one way trip). We will be flying into Heathrow and do not plan to take taxis or rent a car.
When I say cozy I mean it's privately owned by a Grandma/Grandpa kind of sort who greets you at the door and wants to have a cup of tea with you around tea time.