I bought off the plan some years ago. I had stipulated items in the contract that on inspection were wrong. I seem to recall my solicitor telling me that should I go ahead and settle then these problems would be mine and it would be hard to change them as I had accepted the property by settling, or words to that effect.
I also found an error in the contract. Something that was mentioned as an inclusion that wasn’t. I ended up making a deal with the builder – you do this and I won’t enforce that! Was it a fantastic result – no. Was it good enough – yes. I realize you are disappointed that your new apartment is not what you stipulated in your contract, but if you do like it and don’t want to or can’t go elsewhere, then I would take their money, then settle and live with the white ceiling. Not what you wanted I know, but it means some extra money in your pocket, somewhere to move into and a battle you don’t have to fight. There are enough worries with moving into a new home, and Lord knows there are enough stresses with living in strata. So lighten your load if you possibly can.