Lower rent for renovations in building?

My tenants have emailed complaining of renovation noise, first in the apartment next door, now in the apartment below. They want a rent reduction for the period of renovations, “especially as M works from home and the noise will severely affect her ability to focus…”  They say: “Under the Tenant’s Right to Quiet Enjoyment, tenants are entitled to live in their rental property without undue interference or disturbances.”
I fail to see how I, as a landlord, am responsible for noise in the building – which everyone else will have to endure also. Am I liable for this? My agent says they get these queries often and I should refuse, as renovating is a standard process and the unit is not designed as a home office (it’s a very small one bedroom unit). Opinion please?

(As an aside: four months ago, these same tenants complained of mould, saying it was so bad one had to go to hospital due to asthma. I immediately instructed the agent to do an inspection and let’s take care of the problem. In all this time the tenants have not given the agent access, so I’m not sure how bad a problem the mould actually is.)