30-pt according to 2019 DOE standards in america would do it. You could maybe use a smaller one, but with dehumidifiers definitely advantageous to go 1 size up.
this is 30pts per 24 hours potential moisture removal from air in 60F / 60% RH context.
Depending on where you are, they may list how much moisture it can remove per 24hours based on 90F / 90% RH, which is absurd and bloated. Figure 40-50% of that value if they don't list the capabilities under 60F/60% context.
e,g, a 60-70pt dehum under DOE rules in america could be listed as a 150pt dehum somewhere else, which is absurd and unrealistic. Even amazon while using it in america has a bunch of products not listing these specifications according to the law, here.