Yes, another Hilton London Question

Many thanks for those who choose to provide some helpful insights.

After 25-hours of travel from HNL to LHR, Mrs747FC and I will be staying in London for three nights (two full days). Looking at prices and previous posts, have been considering the:

1. DT Westminister
2. Hilton Olympia
3. Hilton Kensington
4. DT Hyde Park

We will take a taxi into town. Hoping to find comfortable, quiet and clean bed/room to cope with the jet-lag.

We will be pretty jet-lagged for the first couple of days, so will cope by just walking around and seeing some sights.

For those of you who are knowledgeable about the properties and locations, your thoughts would be appreciated. And yes, I know there are a ton of previous threads, some of which I have used to narrow down the choices.

Thanks!