Air-to-Air Heat Pump Installation

Description

Need consultation and installation of an air-to-air heat pump, primarily for cooling. I am considering installing one indoor unit on the second floor, with a total area of about 45-50 m2, which should cover the entire space, but I am open to other suggestions. I am also considering a multi-split system. The first image shows the wall above the right window on the second floor where the indoor unit could be installed. The location for the outdoor unit is shown in the second image, in the corner between the garage and the house. A plan is attached, indicating the approximate location of the indoor unit with an arrow.