I had a look at these recently , a 12BTU new in the shop was 35k pesos, not cheap ...
Cons are in addition to noise, need to empty their water bucket, not sure how often..., also need to put the hot air hose out of the window, some come with a kit, some not..., efficiency not as good as split of course...
Pros are that they are portable, but I can't see dragging the hot air hose from living room to the bedroom and back, twice a day...! Also 110v and plug and play, no installation, maybe survive better than a split compressor which will be outside in the sun and rain..., maybe !
I think better feedback we get from people who have them and use them..., note that they start from 5BTU, so big variety and range...