I had a stapedectomy 2 and half ears ago due to otosclerosis. My left ear hearing was completely restored. Unfortunately, I got very ugly complication - hyperacusis. It is a condition when you heat everything on that side enormously loud. Two very experienced and reputable doctors (ENT surgeon and neurootologist) trying to fight this situation, but so far unsuccessfully. It's not Meenier, and not eustachian tube dysfunction. I have to use a cotton ball or ear plug outside and in many cases indoor. Sometimes even Apple EAR Pods. They say that it takes time for the brain to adjust to the new sound quality. Nothing was found wrong with my brain for this matter on MRI though. And it's still going on for 2and half years. And my surgeon is admitting, that this is a first case in his more than 30 years of doing this surgeries.
So, my advice ( if you care)- think about this...