Adding sun for your home is a great idea and can be enjoyed by all who live there also any company that comes to visit. The design you want to sunbathe you depends on what you are going to do in it. You want to enable you to enjoy the sunshine but what else would you be interested in?
Having a sunroom screen will be less than one glass and you will still be able to enjoy the space to relax and enjoy the sun. You can get many benefits found outside without the danger of sun or deal with mosquitoes at night. Keep in mind that if you only have a rain screen will be able to enter. You can install patio enclosures in phoenix AZ from various online sources.
Make sure you do not put carpet in the room or furniture that can damage or that would allow the fungus to grow.
If you choose to add a window to the sunroom you will make it more flexible and will have several advantages over the screened enclosure. Type sunroom will be more expensive though. If you plan to have become a habitable space then you need to have a closed window that you can easily open when weather permits.
Put a screen behind them will allow you to prevent insects from entering into the room. Make sure the way sunlight is allowed to come and how the brand window is designed to feel as if you are outdoors.