Keira Marlow, 21 and from Brecon, had anorexia for four years.
She had to travel to England for treatment, and said: "it is quite hard to be so far away from home, and the travelling back and forth all the time is a lot to take on as well as trying to recover."
"If [a specialist unit] was actually built in Wales, it would be much easier for Welsh sufferers."
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A chance of seeing brighter spells in the south and east this morning but turning cloudier everywhere this afternoon with patchy rain.
Occasional blustery showers overnight and brisk north-westerly winds. Patchy rain will continue during the day tomorrow.