Experience ruined by stinky bathroom which they refused to move us from

We arrived a week ago and since our arrival I have complained about a stinky bathroom, daily they say they have put something and the smell only subsides for an hour or 2. On Tuesday the smell was unbearable and then I was told the traps were not cleaned etc and they also don't know why these were not cleaned prior to my arrival. I requested to be moved and Jeferry the hotel manager refused to be moved due to the full hotel, which in all hinestly inst my problem as this was booked in June/ july as soon as bookings opened. Yet it was fine to take me when I'm sure you were fully aware there was an issue in the bathroom in my particular unit. This has actually ruined my entire experience for my kids and I as daily we had to endure a sewage smell. We couldn't even eat in the room because of the smell. We had aircons running all day and tried closing that bathroom door which also doesn't close completely because of a damaged handle. No amount of free breakfast or changing my room on my last night will help as it took up until the 11th hour to be taken seriously.The service received regarding my issue is actually pathetic. No empathy shown at all. We really looked forward to this holiday and are completely disappointed and disgusted by the non chalant attitude of the staff.