Promising @coastergirl.
I have removed all traces of life from the balcony, stripped and scrubbed it. And painted it a non-colour universally recognised as Posh Meh. With a pale blue feature wall and lilac geraniums, it's looking good. Meh looks quite good with plants, as it happens, so it's staying.
There is a paw print in the posh floor. I thought of spraying Feliway into the final coat of paint so the Capn can really get settled into his chillouts in the summer.
Might get him a little sofa.