Yes, I’ve been to Alchevsk, Lugansk, Kharkov, and Kiev. I would like to go the Carpathian Mountains in the western part of Ukraine but haven’t made it there yet.
I’ve been the Alchevsk three times, in ‘05 to get married, ‘06, and again in ‘09. My wife was born and raised there to a Russian mother and a Ukrainian father. Her sentiments lean decidedly towards Russia though she wishes the war would end and worries of friends and family who remain (though her parents have passed away and her siblings moved to Russia some time ago). I was in Luhansk in ‘05 and ‘06 and flew in and out of Kiev all three times, necessitating overnight stays. I visited Sevastopol, Crimea in ‘13 and found it to be strongly pro-Russian.
I’ve been in the Carpathian range on the Romanian side... it’s absolutely beautiful there.