I bought this bed as my 90 year old father moved in with us full time.  It is PERFECT for his needs and he loves the comfort of it.  I used his new mattress from a "split king" we had and the mattress fits perfectly.  Love that this came in an "twin XL" option as he is 6' 1" tall, so this was a must!   The assembly was about 1 hour with two people, and required some thought process.   Please note it will take some patience and well worth it!