The flat is in a top central location in London, just 2 minutes from the underground station. The 31st floor offers fantastic panoramic views during the day and evening.
The keys for the check-in are available from a shop nearby, but if you have lots of luggage, it's probably convenient to leave it at the building reception and then go to collect the keys.
The apartment has a very nice terrace to enjoy an early morning coffee, and you can grab one from the coffee shop just at the corner of the building.
I recommend Alex's flat if you want a quick and efficient connection to central London.