Ask the doctor (geriatrician) / nurses for a referral.
If the person is now in a Hospital Authority hospital then ask the hospital's community nurse for some names.
They know best.
The environment of aged home for 6000 not very well, If they can't walk independent, just pass unrine beside the bed and no screen, without privacy. If u can arrange someone to take care him after work, u better employ a maid at home.