We were meant to be arriving around 8pm, so had to book (and pay extra) to meet the key holder. Storm Eunice made travel unpredicatble, and we ended up having to drive and hope we arrived in time, which we did.
There were some dusty areas, and a couple of wine rings on the table, but the flat was otherwise very nice and clean.
It's well appointed, and has really wonderful views over Battersea Power Station, London Eye, Shard, Westminster, etc. Concierge was courteous and helpful, and the location was handier than I'd imagined when the actual location was divulged 2 days before arrival (spoiler, it's 10 minutes walk from Sloane Square). The Q Park Pimlico was really handy (2 minutes walk). Delivery apps for food seemed not to recognise the flat number, so had to intercept the delivery driver at reception.
I'd definitely go back.