You don't seem to be jumping for joy at the idea of this adventure.. ..
Work said you can work from home but can you work from another country?
Are there visas involved? Some countries allow digital nomads, some will require you to register as an independent contractor ... Sometimes companies risk exposure to local employment legislation and even corporation taxes if they have employees resident in that country.
Will it be easy for you to get a job in the new country if you ever decide you want a change from your current job.... what are the progression possibilities within your current company / in other companies?
Does your partner have a job lined up in the new location?
If you were offered an unmissable opportunity in another country, would he follow you?
Read the Living Overseas board... many trailing spouses on there... left years later having given up their careers, lives, friends, put their own needs last, looking back.. having lived comfortable lives but maybe not what they had imagined their lives might turn out to be...
Open mind is important... having goals and dreams of your own that will be met my the move. Your first instincts are probably correct... the positives will be right, as will the negatives... no place or life is perfect.. it is our ability to balance the needs of everyone in the family / partnership and the ability to make the most of the positives and mitigate the negatives that will determine the success of the move.