I ordered a portable AC directly from Comfee after shopping around for a 12,000 BTU model. It was delivered on a pallet two days later by a very professional courier. I'm impressed by its performance - I've placed it on my top floor landing and it does a good job at cooling two rooms.
Everything seems well-made but the unit is large, heavy and loud. This is all consistent with the model specifications and buyers should be considerate of what 30kg feels like to lift etc.
The Comfee website is a bit wonky (the standard checkout didn't work and I had to use PayPal, and my order is still saying it's awaiting dispatch). But I did use the chat function to confirm it had been shipped and I got a fast response.