I'd much rather take the HE to Paddington and then a cab to the hotel if I had
anything more than a carry-on. Its not that far to the other side of
Hyde/Kensington Park from the train station. Beats trying to drag a bunch of
bags on the Tube. Faster as well.

Obviously here speaks someone who has lots of money (or an expense
account). HE is about 3 times the price of a tube ticket and the tube
ticket (if a travel card is bought) can then be used to travel around
using public transport the rest of the day, unlike the HE ticket.

*And* then the traveller is also queuing up for, and paying through
the nose for a cab, dragging their "bunch of bags" all the while. I
would contend that travelling on the Piccadilly Line outside the rush
hour will take about the same time as HE+cab to many destinations -
including expensive hotels in Hyde Park and/or Kensington Park