Accomodation wanted 30 Sept to 3 October

A former colleague is visiting London from Romania for a few days later this year. Does anyone know of a cheap room for rent for a few days for her and her fiancé?

Are they against staying in a hostel? Someone I work with recently stayed in one as a “somewhere cheap to bed down after a barmy with the missus” sort of affair …

Can find out which if you like?