We have incredibly hard water, no softener and lots of mineral deposits on everything that touches water for any length of time. The solution is incredibly simple: white vinegar. It very simply and easily and gently dissolves the minerals. We had a shower head that my husband was ready to replace because the mineral deposits had clogged it. I unscrewed the head, submerged it in a cup of vinegar for 24 hours, rinsed it off and screwed it back on. Voila! Like new! I have tried CLR: worthless. I have tried abrasives: all they do is scratch and don't get rid of the deposits. Another spot where minerals accumulate is around the kitchen faucet. I take a bunch of paper towels, soak them in vinegar, then pack them around the faucet over the mineral deposits, keeping them good and wet with vinegar and let them sit for about a day, more or less. Rinse and wipe clean, will look like new! Our cat loves water. His favorite thing in the world is if I fill the bathroom sink with water and let him play in it. What happens? Water spots all over the mirror. Wet a cloth, add a dash of vinegar to the cloth, wipe the mirror... clean and shiny!

Thank you roj leather and Simon for your recommendations. I like the hanging chair and the almanda creeper on the wall. This will certainly liven up the patio.

Since the lot you describe is smaller than my open living area, I would suggest looking at some of the "shotgun" house plans around New Orleans,LA. I think you can build up and back and get an interesting home with a loft for space. It can be done, A porch with an entry to a narrow hall at the back might work best for you. Will you plan a courtyard (closed)? or what? What part of the country are you in? What are your local codes?

You do not mention whether you wooden wall will be painted or stained wood. Either way, there paint products you can use to properly seal and protect the wood either way. You should visit your local paint store and tell them what you are trying to do and see what products they recommend.