I purchased an Igenix cooler last summer. It is on wheels, which means easy (in a flat) to move from Living Room to bedroom., etc. Has water tank and two ice blocks. Yes, I know it much the same than putting a wet towel in front of my normal tower fan - but TBH, it is nicer to look at than that, and easier to use.
It does NOT a great cooling effect, but anything can better than nothing when we have those hot stuffy times, the only problem I had with it is that the remote control seems to be on the same frequency as the one for my tower fan (a different make), and there is no way of amending the frequency on these small remotes. My Living room has a large patio door, and a window on the opposite wall, so can usually get some sort of 'through breeze', but the sun blazes through the windows next to that patio door - At the end of last summer I finally had an awning fitted onto that balcony, and hope that using that this summer will help.