Best hotel in London for families that need a 2 bedroom set up

Trying to plan a last minute London trip for the family before the school year starts and we are targeting the last week of August. We will be doing the typical highlights as it’s the kids first time to London. But what I’m straggling with most is the hotel + location selection and the room type. Ideally we will be in a 2 bedroom set up of some sort. I’ve looked extensively at The Lanesborough & The Corinthia. Both have nice two bedroom suite set ups.

Does anyone have experience at either of these hotels with kids? Or another hotel that’s better for families? What about Raffles or even Four Seasons Park Lane?

There are so many London hotels, I feel a bit paralyzed.