Compared to the other AC units we have is average it does the job but unlike the others we have it does not self-evaporate and we now have to have a pipe on the back and during the current heat wave this needs emptying daily as it fills up a washing up bowl every day of water. There is a tank and this did need emptying in the early days but that was once every week or so now the tank would fill in a day, we have other units that almost never need emptying I am not sure why perhaps they use the water to cool the motor and that then evaporates out the pipe.
Reliability 5/5 it's always worked
Noise 2/5 it's not quite at all and I could work in the same office with it running, we have it just outside in the corridor
Ease of use 3/5 once you get used to the controls they are simple but the display is not that clear and compared to the other units we have its quite small but the filling up of the tank is a pain or you have to stand it on something and have a bowl at the back.
Cooling 3/5 It will make a difference but has to but on fast which in turn means it's noisy
Overall I wouldn't recommend it but if you cannot find another unit then it will cool your room