This depends on your needs and lifestyle preferences! If you don’t wish to install an aircon permanently, a portable one can be a good alternative to cooling your room. They generally require less cleaning and servicing than central aircon, and installation costs are typically lower.
However, do note that these appliances aren’t suitable for cooling more than 1 room at a time. Additionally, some may not be ideal for cooling big spaces like living rooms due to their limited area of coverage.