I recommend the LUBA 3 AWD 5000 for your 3000m² lawn.

While the AWD 3000 is rated for your exact size, the AWD 5000 is the superior choice because:

Efficiency: It is always best to "oversize" your mower. The 5000 model won't have to work at its absolute maximum capacity, leading to a faster overall cut and less wear on the machine.

Larger Battery: It features a 15Ah battery (compared to 12Ah), allowing it to mow longer between charges.

Zone Management: With your lawn split into three distinct parts and containing complex plant beds, the 5000's higher zone capacity ensures it can handle the navigation and mapping requirements with ease.

If you decide to purchase I would appreciate if you use my affiliate link here –
https://uk.mammotion.com/products/luba-3-awd-robot-lawn-mower?ref=kd2jxen4&utm_campaign=12268399&utm_medium=kol&utm_source=goaffpro

I have reviewed this mower and my video will be live next week, but I can safely say you will not be disappointed.

All the best Mark