Been building a 20ft tiny house piece by piece over the last 6 years. It's that time of the year to get back to work on it. Currently finishing the staircase/ladder/closet/storage selves up the loft. Reclaimed rough sawn ash from the neighbors rejects. Tung oil finish. 
https://i.imgur.com/hOla083.jpeg
https://i.imgur.com/8lDuOAF.jpeg
https://i.imgur.com/PdPZPQX.jpeg