.....take converter they are inexpensive and small to carry......
Bad advice. I hoping she meant adapters which are small and easy to carry. DO NOT take or more importantly use a converter IF it is not required. Using a converter for something that does NOT need a converter can cause serious problems.
Don't ask the hotels because ALL hotels will be on 220-240 volt system. All of Europe is on the same voltage system. They have no idea if you need a converter or not. Only you know that. You absolutely must check the input plug on every electrical item you are taking to see if the input is 120-240 volts. If not leave it home. The power strip you are using will not serve as a converter. It is strictly a pass through of what goes in one end comes out the other.
Sometimes, but infrequent, you might see a 120v outlet in the bathroom near the mirror for electric razors ONLY. Pull a hair dryer into that and you will get smoke and probably a call from the front disk. Don't treat this subject lightly because it can led to a shocking surprise.