"How are your first impressions?" vs "What are your first impressions?"

Question

Can either of these sentences be used?

"How are your first impressions of this city?"

"What are your first impressions of this city?"

Also, can I say either of these sentences?

"My first impressions of this city are good."

"My first impressions of this city are that this is a good city."

Context: Let's say I visited a city for the first time with a friend of mine.

Answer 1

Personally as a native English speaker, I would use “What are your first impressions of this city?” I’ve never heard anyone use “How are your first impressions of this city?” before.

Both “My first impressions of this city are good.” and “My first impressions of this city are that this is a good city.” can be used.