I have been back and done two screen grabs for the night in question ( but every other night I looked at was similar ) - I got the difference slightly wrong - as the Accor currency converter kicked in ... but its still a large amount ... still 30€

Surely it should be one room one price one or two people ?

Its not a pokey B & B somewhere in the middle of a large city where there are different size rooms ..... done too many of those in student days.