Just reserve a stay at Marriott's new experimental London Homes and apartment flats.
Average nightly MR points needed for these accommodations are well over 175K/night depending on number of rooms, location, and time of year.
My 350K point example is for Christmas and New Year's in a 4 bedroom home located in Noting Hill.
To be fair, there are also 1 bedroom homes/flats that can be reserved for as little as 36K/night in certain locations during low season.
But this post was for living large so $350K/night seemed appropriate for the Dreamtracker occasion.