There are advantages and disadvantages to renting a private home. If you are particulary concerned about having tours and diving set up for you on site, would advise a resort. Sounds like you are a little nervous about this. An advantage of course is privacy in a private home. You really won't have a problem setting things up yourself, you can book thru all the resorts even if you are in a private home. The caretakers at these homes are usually quite knowlegable and will guide you to where you might go. For your first visit think you might be less stressed at something like Robert E. suggests. It's all at your fingertips.