hmmmm......

i would tell them ALL that this is not a bed and breakfast and there are 3 rooms, for 3 tenants, then i would seriously tell the landlord if it continues......it is beyond what is right and what you want, but liability as well....what if this clown wrecked the house or put holes in the wall, then you and the other 2 people are left holding the bucket on that one....or there are now increased utilities and you are all in trouble or even kicked out for having a "more than guest" in the dwelling....good luck....