Tbh, hardly any end would be good enough for this. After 6 years it would be hard to let go either way.
But yeh, it accomplished the goals, they're living together, will marry in the future and told they1re friends, who obviously knew, so its a good point to end... NOT!!
Felt so underwhelming to end just like that... well, the friends sudden arrival worked to keep the series extremely PG as always.
Maybe a spinoff from here on? But then i guess the author also had to say goodbye and idk if it would keep being interesting or just complicated going pass the planned ending.