The sofa bed my 13 yr.old stayed on the Valor was big & comfortable for HER. Depends if the adult is average/larger size.
To save money, I would sleep on the sofabed if I had to for a week! (I have to admit the king size bed was SO comfy!!!!)
Maybe some other adult has experienced the Valor's sofa bed and will reply.
NCL Jewel March 14/08(Southern Caribb.)VALOR Jan. 7 /07(Western Caribb. again!)
VALOR Jan/05-our first family cruise was great!