I live on Nordica 30, by myself, and enjoy every minute of it. The trick is not to make it just like a "house". It is a boat! There are certain limitations and you have to live with them, together with the advantages. I would like to keep it as simple as possible, less things to break and maintain. Less expensive, too.
Life on a boat is a lifestyle, a choice, a limitation... and freedom.
It is what you make of it..