The landlord has 2, not sure of the brand, but they have been using them for about 5 years.
They do get trapped in small rooms a bit and you can not have any cords of any type on the floor, so it might take a fair bit of reorganising to get it to work properly.
However they are very happy with theirs,
Last person to leave turns them on ( via remote ) and first person home turns them off.
They tried running them all night but they could not get used to the noise of them running.
She is asthmatic so it is all solid floors with just a few scatter rugs, they have 3 very fluffy house cats and they are quite happy with them.
The house is built on a concrete slab so dead flat floors, no steps, no floor level changes.
You will either have to give the house a very good clean before you turn them on or be preparred to empty them every 1/2 hour for the first week or so because the dirt bags are very small.
One is an older, bump & change direction, random path "stupid" type and the other is a newer "intelligent " type that is supposed to learn the floor plan which works a lot better.