Thirty minutes from both Heathrow Airport and Big Ben, The Grove Hotel, in Hertfordshire, imparts a modern twirl to the former longtime home of the Earls of Clarendon.  The first house was built on the 300-acre wooded estate during Elizabethan times.  In the 18th century, one particular Earl essentially created the notion of the “country weekend” house party on the property.  Guests inc...