Searching for additional air conditioning

One of the things I love about my home is that we have a porch attached to the home that leads into the backyard.

The porch is a room within our house, but our central HVAC system does not extend to it. It can get very cold in the winter, but we just keep it closed off during that time of year. Up until this point, we have not had any air conditioning on the porch. However, as our kids get older and have friends over more often, the porch is used more and more often. My husband and I have decided that we want to add some form of supplemental air conditioning that we can use when it is needed, but that we won’t have to run constantly like our central air system. We are unsure of whether or not we should get a ductless mini split or a portable air conditioner. A ductless mini split is more expensive, but it is designed to cool a specific room, it does not need to be near a window, and it is a higher quality machine. That being said, we don’t necessarily need anything fancy. A portable air conditioner is affordable, more powerful than a window unit, and it can be moved around if we ever need to put it somewhere else. I’m not sure which method of air conditioning we will pick, but we want to make a decision before the summer starts.
heating and cooling