For some people itís a palace. I lived quite comfortably on an OíDay 26 and a 22 foot Sea Sprite. I did that when I was younger and now I wouldnít live on anything smaller then my current boat which is a Tartan 34C. It all depends on what you need not the opinion of someone else.
I think the things to consider are the amount of storage and the amount of stuff you need to store. How much headroom is in the boat and do you want to be able to stand upright to cook and such. How do you spend you time onboard and can you do that on the boat you are thinking of living on. By that I mean if you just want to sleep on a boat you donít need much of a boat. But if you want to spend the weekend reading or watching DVD movies on the computer you need a boat that has enough room to do those things comfortably.
All the best,
Study the history of naval architecture and move forward knowing what didnít work before.
Donít waste time making the same old mistakes but instead make new ones and to insure your place in history be sure the mistakes are big ones.
Never design a mast that is weaker then the boat
Never design a boat that is weaker then the mast
Never listen to someone describe why your project will not work unless they can show you the broken pieces of their own version.