I know this adds very little to the conversation - but my method of madness is the value i get from the lounge access. Hilton on 22 is approx. £120 per night but with status i get lounge access. I estimate i drink (mainly) and eat £50 per session. So i got ‘the flavour’ before i go out-out.. That brings it down in my head to £70 a night, bargain!
i also like the Park Plaza on 18, for £75 a night you can grt one of their 3 suites (vv large). The sofa/sitting area, office area and walk in shower just allows for more ‘diverse action’ and the option to keep the bed ‘sleepable’.