FWIW at least in the US (and I can't imagine they wouldn't be available worldwide) there are also dual hose portable AC units which can perform fairly decently, at least far better than single hose. I needed to use one for awhile at an old office (I think it was a Whynter model) and it was effective. There are also more exotic portable units that use water as the fluid dump, but that requires having a sufficient water source that you can utilize, and probably isn't going to be doable in a residential unit in a city. We had a couple at the chemistry lab I worked in 10-15 years ago that hooked into the lab water lines.