You are looking for an easily found nano container in a high muggle area (hence the higher difficulty rating).
Have included a detailed hint which should take you right to it and you can then demonstrate your stealth skills to retrieve it!
The views from here are great. Isle of Wight and the Needles in front of you. Highcliffe and Mudeford lie to the West and the eroded cliffs of Barton on sea are East. Beach is popular but mainly stones here.
There is a cafe and toilets nearby. Car Park is free in low season, chargeable (pay and display) from April to Sept.
Please be as stealthy as possible so we can keep this one going as long as we can without it getting muggled!