Have you been to The Stafford? I have transitioned a few of my regular FS London guests to that hotel with a lot of success.
I have stayed at The Stafford twice and both times I wishes I hadn't. I like the old courtyard wing, but was not too impressed with the new wing as although it looked good initially, the suites/rooms did not work too well - too much furniture and a bit sterile.
I love the hotel bar in the summer, as you can sit outside with a drink - unique in London. My big problem with The Stafford though is the food, which I think is frightful! I also find the restaurant staff a bit too Fawlty Towers - nowadays with a touch of Eastern Europe.
It appears that 90% or more of the guests are from North America and therefore perhaps find The Stafford 'cute' and very 'English', but if you are English then you tend to see through it all and if you are me, long for a good meal!! Food does not have to be bad in England anymore.