If you booked a whole listing the host shouldn't enter the premises during your stay unless there is an emergency and you have agreed a time for them to enter @Vic7045
What reason did the host give for thinking more people at the property than had booked. It would have been better to confirm at the time that they weren't allowed to enter.
i don't think you're entitled to compensation the best way to address this issue is by leaving an honest review to warn future guests.