A lovely hotel in Rome?

[OverAndAbove]

Can anyone recommend something fairly central and really nice? With a swimming pool and loungers area? It's going to be hot so we will be sightseeing in the mornings and then want to chill in the afternoons.

We are only staying a few nights so not too bothered if it's very expensive; we'll have two DDs 9 and 11 with us so if adjoining/ connected rooms, that would be good but not essential

There won't be much choice that's central. There just isn't room in central Rome for a pool + loungers.

What do you categorize as very expensive? As to find pool + loungers + central you will prob be top end of the market.