A comment
It was not possible to install a split system, so I had to stay on a mobile air conditioner. I chose for a long time, since I had not previously had the opportunity to use such devices. All carefully compared, read, so that inadvertently not to overpay or buy poor quality. In the end, I decided to take the Neoclima NPAC-09CE Mobile Air Conditioner.
As for the work, then everything is wonderful. Air drives at a speed of 6 m3 in one minute, but from here the trouble arises - noise. At the bottom of the air conditioner there are wheels with which I can easily move it in the room. Installation is simple, everything that was needed was included, I did not buy anything extra. It cost 13 thousand. I can advise only as a temporary measure, or if it is not possible to install a full-fledged air conditioner. It really hurts loudly to make noise, to sleep when it is turned on unbearably.
pros
it cools well, the controls are simple, and installation is not difficult to handle.
Minuses
abnormal air circulation pattern. noise