We purchased this robot vacuum cleaner in early 2019.

It is a Eufy Robovac 30c.
We purchased it because it is one of the very few models in the market that:
can easily be cleaned
Easy to replace parts (including battery)
Is smart, so can be controlled via phone
Comes with spares and a cleaning tool
Has a quiet mode
Is a very low-profile model.
Is smart home compatible ("Hey Google, turn the vacuum cleaner on").

We used it in our small apartment in Germany for around 4 months, then