The MEL Ibis budget is perfectly satisfactory. It's clean, comfortable ( so long as you gave your eyes closed ) and " good value ". It's just like JetStar - have low expectations and you'll be pleasantly satisfied. Good enough for somewhere to sleep ( and nothing much else ).
I agree. I find both the Holiday Inn and Park Royal to be incredibly overpriced for what they are. If you only want a shower and a bed then the Ibis is fine.
The Holiday Inn in particular appears to have had nothing invested in it since I started staying there in the early 1990's!