Carlow's Brandon Bolger was on day four on Friday waiting for cancer treatment again as no bed was available.
Brandon, 10, was diagnosed with Ewing’s sarcoma – a rare disease affecting bone or soft tissue – last March.
Since then he has been receiving strong doses of chemotherapy at Our Lady’s Children’s Hospital Crumlin every two weeks.
Senator Jennifer Murnane O'Connor has raised the issue in the Seanad.
In a post on Brandon's Tractor Appeal Facebook page on Tuesday, the family said: "Hi everyone just to let you know Brandon was due in for chemo today but once again no bed and we still don't know when he will get a bed.
"He spent the last few days in and out of Kilkenny hospital very sick but the nurses there treat him like a celebrity so just big thank you to everyone for your support."
An update on Friday added: "Day 4 still no bed. How is any child to get better?"