Flat noise on top floor

Hi all,

I’ve recently moved into a 2nd floor new build flat. It’s a block of 6, so I don’t have any neighbour’s adjoining me, just a corridor between, and I only have the floors below.

No one has moved into the 1st floor yet so it’s empty, but on the ground floor a family with young children have moved in.

I’m not sure what it is, but noise seems to be travelling up the walls or something. For example when the kids are running around, it sounds like they’re bouncing around in my flat or it’s coming from the loft above.

Has anyone experienced this before? I expected some noise but the reverberation seems quite loud at times, especially as it’s coming from the ground floor.