<<"Would you please kindly inform me which ones for you are confusing and cannot be answered ? ">>
By the way , it would be easier to answer you if your questions were numbered.
<<"How many times had you been in Zermatt before your current stay? *">>>
I am not in Zermatt at this time. That is confusing and cannot be answered as phrased.
<<"What is your overall satisfaction with your visit to this tourist destination? *">>
Which visit? I have been there more than once.
About several questions regarding the cost of a room in Zermatt -
I am from the USA, travel to Switzerland frequently, and think in CHF, or, as a secondary thought, in USD.
Compared to the USD, the CHF is much less strong that it was a few years ago, not stronger.
Perhaps it would be clearer if you stated more clearly at the very beginning that only citizens of the Eurozone or the UK should fill out the survey. The way that you phrase the comment about "European tourists" in my opinion can mean citizens of any country who are tourists in Europe. Also, it could mean citizens of countries in Europe where the Euro is not the currency. (Bulgaria, Croatia, Czech Republic, Denmark, Hungary, Poland, Romania, Sweden, and the United Kingdom are EU members but do not use the euro. Admittedly, some of those currencies are linked to the Euro).
Your choice of wording certainly did not stop me from gong any further with the survey.
To answer in Euros or Pounds Sterling is very hard for me, and does not have any real "emotional" or intuitive sense of costs. A value expressed in Euros for me has no feeling of "expensive", "cheap" or "value." It is just a number in "funny money."
Finally- your survey could and perhaps should include Swiss residents, because their travel patterns are influenced by a strong CHF.
<<"At what price would you consider a night in a double room in a 4-star hotel in Zermatt to be a good value for your money ?">>
Perhaps "4-star hotel" has a specific meaning, by the standards of the SHA. However, even for myself, an experienced traveler in Switzerland, "4-star" is not well defined in my mind, and I'd have to look up what that means vs. 3-star or 5- star. My perspective may be wrong, because a citizen of the Euro-zone, Switzerland, the UK, etc., may know exactly what a 4-star hotel means.
it is good that you have designed a short survey, and have left spaces for "other" in the answers.