Just came back from visiting Kyiv and Lviv and thought I would share a few experiences of mine...
Flew into Lviv from Bratislava on a Wizz Air flight, no issues...taxis will try and rip you off at the airport (at least they did for us). Luckily thanks to the Trip Advisor forum we knew what to pay (we paid 150 UAH but some reported to pay as little as 100). There were ATM's at the airport.
We found it really handy to get a SIM card (was about $8 CDN for 8 days that gave us plenty of data and never used it all). Communication was often difficult so google translate was very handy. We also used Uber throughout our stay (so incredibly cheap and was a couple of dollars for most trips).
Lviv is one of my favourite European cities. It was so beautiful, everything was walking distance, great food and so cheap. So many of the restaurants were quirky and lots of fun. We had a great one bedroom airbnb for around $40 CDN/night and it was very modern and had all the amenities you would need. It was right beside the Opera building and loved the activities/people watching in that area. I can't say enough great things about this city.
Took a train from Lviv to Kyiv and booked our train through the website before we left Canada. Printed off the receipt (all in Ukranian and couldn't understand it) Went to the train station and had read on Trip Advisor that you had to take the receipt to a ticket booth to get an official ticket. Communication was pretty difficult at the train station and we were pointed in so many directions. Luckily we ran into some travelers who pointed us to the right area. I would give extra time at the rail station for this. Don't even think we did it right as when boarded the train we had to show our ticket before boarding and the attendant got upset with us and waved our ticket around but we couldn't understand her. She reluctantly let us on. Never found out what that was about. Train was great, took an intercity express and it was very comfortable. Bring toilet paper.
Kyiv was fantastic and different from Lviv. Besides the obvious fact that it is so much bigger, it seemed more "Russian" if that makes sense. Still, despite it's size it was easy to get around. We ended up walking everywhere but they have a very cheap metro and Uber is everywhere and very cheap. Did a Chernobyl day trip (used Solo Ease Travel and highly recommend them). What an experience that was! Very informative and the town of Pripyat was so eerie to walk through.
always felt safe and couldn't get over how cheap everything was! We would go out to eat and order two entrees and 2 drinks each...came to around $18CDN total. loved our time there and want to go back and explore more of the country.