That hotel is not what I would consider central or convenient.
What the sugar coated magic words on the hotel website says is:-
The hotel is easily accessible from all major transport points in the
city. The closest Overground station is Imperial Wharf which is less
than 100 meters from the hotel and connects you to all London has to
offer.
From Leicester Square Underground Station: Take the Piccadilly Line to
Earl's Court. From here, the hotel is 10 minutes by taxi or take the
C3 bus (signed Chelsea Harbour) to the hotel (approx 15 mins). Or
change to the District Line to West Brompton, change and take the
Overground to Imperial Wharf and the hotel is a one minute walk away.
From Oxford Circus Underground Station: Take the Central Line from
Oxford Circus to Shepherd's Bush and change here and take the
Overground to Imperial Wharf Station.
Fulham Broadway Underground Station: Fulham Broadway (District Line)
is five minutes by taxi to the hotel or exit the underground and take
a right onto Fulham Broadway, then take the first left onto Harwood
Road, turn right onto New Kings Road and cross the road immediately
and turn left onto Bagley’s Lane/ Harwood Terrace. Continue then turn
right onto Imperial road and the hotel entrance is 800 metres away
(Approx 15 minutes walk).
Earls Court Underground Station: Earls Court Station is on the
Piccadilly, District and Circle lines. It is 10 minutes by taxi to the
hotel or exit the station via Earls Court Road exit cross the road and
from bus stop A take the C3 bus (signed Chelsea Harbour) to the hotel
(approx 15 mins). Or you can take the District Line from Earls Court
to West Brompton, change and take the Overground to Imperial Wharf and
the hotel is a one minute walk away.
Kings Cross/St. Pancras Train Station: Take a taxi or travel via
underground to Earls Court (District/ Circle or Piccadilly Line) or to
Fulham Broadway (District Line) and follow continuing instructions
listed from these stations.
Euston Train Station: Trains from north-west Britain stop at Euston.
Take a taxi to the hotel. Alternatively, take the Overground from
Euston to Willesden Junction and then change lines and take the
Overground to Imperial Wharf station and it is just a one minute walk
to the hotel from here.
Thames River Bus: You can also take the Thames River Bus from
Embankment to Chelsea Harbour and the hotel is just a five minute walk
from here. Thames river bus and river tours services are a great way
to get around! It is popular with both visitors to London and local
commuters.Travelling by river is a great way to get to your
destination. You'll beat the traffic and soak up some fantastic views
of London along the way!
Heathrow Airport - using Heathrow Express: Take the Heathrow Express
to Paddington Rail Station and walk to Paddington Underground station
and take the District Line to West Brompton. Change here to take the
Overground to Imperial Wharf and we are just a 1-minute walk away.
Heathrow Airport - using London Underground: Take London Underground
Piccadilly Line to Earls Court. Change for the District Line to West
Brompton and change here to take the Overground to Imperial Wharf. We
are just a 1-minute walk from Imperial Wharf Station.
As far as I would think the only reasonable transport is the train which doesn't really go where you would want or the boat which is far too slow to count on for regular transportation.
When you said "Chelsea", that's not what I would think of as Chelsea which as far as I am concerned starts the other side of the World's End and improves as you approach Sloane Square. Where that hotel is more properly called Chelsea Harbour or Sands End.