This plugin works great. It's amazing that it's free and the developer struggles to get the word out about it. It has a nice training feature and it hasn't crashed once. I think my client will get the pro version just so we can have the view "availability calendar" option.
We are able to book house rentals, and still add a discount for weekly rates, he seems to have thought of just about everything.
Anything that didn't work correctly was because I had check boxed the wrong item, about 5% of it is sleightly confusing but nothing you can't test and figure out what the right options are.
To create this type of programming from scratch would be incredibly expensive. This plugin works and works great.