Yes that's right, but could anyone use them or just those in the attached apartments as in Block 5?
We can't be sure of that Gunit, but we do know that in block 6 there is a connecting area between the front and the back joining the stairs and balcony areas to the rear garden and garden gate. This joining area might only be at ground level though. So someone on the first or second floor balcony might have to go downstairs before going thru'to the rear garden
The flats in block 5 are rather different, I think, maybe that is because there is a large difference in ground level between the fronts and backs of these flats. Kate and gerry were ground level at the front but first floor level at the back, with a void underneath at the rear. We do know from Mrs Fenns burglary that hat anyone cheeky enough could go up the stairs to the front doors of each flat.
I think that Block 5 is a symetrical building and the stairs appear to go up the middle. We know that Mrs Fenn had quite a walk along a balcony walkway to her flat. Presumably there is likewise a long walk at upper levels to opposite end of Block 5.
I am tired and am struggling to work out the exits at the rear, but each of the elevated ground floor flats appears to have its own steps down to their own garden and gateway. I am feeling that there is a common exit /entrance to the rear from the staircase, which is in the middle of the front of Block 5, I think. THere would be a passageway through at ground level at least. but would ask if someone would check the situation out please.
Block 5 situation is not as important as that in block 6, I think.