LolaAnn- I have had three natural births, one in hospital, two at home. Firstly, I was lucky that my body knew what to do, and secondly I had great midwives supporting me. I went to an antenatal class but didn't do any hypnobirthing or any special relaxation.
There is no gas and air or pethidine available in the hospital where I gave birth, so psychologically I was prepared not to have pain relief, and if I really needed it, I knew epidurals were available. What I found was that I went into a a natural self hypnotic state, and I coped with the pain far better then I normally would.
MonstrousMerryHenry - if you are planning a water birth at home you may want to consider the strength of the floorboards if the house is old - that was our biggest consideration, as our house is 100 years old. All was fine thugh, I've had two home births.
Your landlord may also be concerned about any possible mess, especially if he has carpets. You can use old shower curtains to protect the carpet.
But in my opinion, you have no need to tell him, I told no-one when we were planning my first home birth, as people can be very prejudiced about it and start saying things like 'I'd have died if I had had a home birth', which forces you to be defensive, and can put doubts into your own mind.