Guest staying in 1 bedroom apartment

Salam aleikom, I am a revert and have question about a non-mahram guest visiting and staying at my and husbands apartment (his step sibling). The apartment has 1 bedroom with a slide door, a living room, kitchen and a bathroom that is on the hallway when you enter the home. There are no doors except the sliding door to the bedroom and the room is very small. Our guest is sleeping in the living room and I have to pray in our bedroom and there is no much space. Is my husband obliged to provide me a separate space during his visit? I have read that it is not permissible to stay alone with non mahram and I have the right for privacy.