Rather confused by your post @Sb2 . A neighbour cannot tell you a minimum time you can rent your property; only your local government/HOA or building management/landlord can do that.
Why do you need a lawyer?Either you are complying with local legislation around minimum time you can do STRs or you are not.
If you are just talk to your neighbour and assure them you are hosting within legislation and assure them of measurements you have put in place as a host to minimise the risk of your guests being disruptive to the local community i.e. having CCTV at the property, rules around quiet time, no parties etc.
If you aren't complying with the law/your lease conditions then apologise and comply.