I pop in there from time to time; the staff are always friendly and willing to assist with trying on watches!
I was there a few weeks back - It’s still going through a major re-development. It used to be more open, with a few stores around the perimeter. As you say, they’re moving brands to their each individual store now! Hopefully they will sort out that ‘end’ room on the bottom floor - It was a bit weird to see multiple brands thrown together. Hopefully just a temporary thing!
I’d love the experience of buying a watch from Harrods, but I can obtain the same pieces with the same levels of service elsewhere for less ... So why would I?