I ereceived the item on the agreed time . I managed to assemble the day bed alone in about one hour. The mattress has arrived one day before. 
After assembeling the bed and looked at the depth , I suggust if the company that made this bed is to think of another day bed with a depth of 70-75 cm and the and to have a back with lower hight. in this way it is possible to move the bed from a room to another room without needing to reopen the bed.