Check the settings of the access point and router. If you see some kind of feature like that, then yes, otherwise not without replacing some hardware.
The bigger issue here seems to be that you're allowing people to stay in your guest cottage whom you apparently do not trust. If you feel you need such restrictions, maybe the better solution is to not offer to let those people stay in your guest cottage. Or let them figure out their own Internet access method.
I have an access point model Netgear WPN802 connected to a router Netgear DG834GT.
The access point (WPN802) is used for guests staying in my guest cottage which is next to my home. Can I restrict the type of content that can be accessed and downloaded via the WPN802?