I should have clarified in the US specifically - I don't know Russian RE well enough to hazard a guess (guessing since your profile says Moscow). Here in the US, you could rent that cabin on airbnb or vrbo for $40-60/night with no maintenance, utilities, or any hassle in general, plus you don't feel obligated to go to a place after the initial fun wears off. Take the $100-200k you'd otherwise spend on a small vacation cabin here, invest it, and your investment would generate enough to stay at a similar cabin 140-280 days a year.
Your mathematical factors and decision-making process undoubtedly work well for your situation. My math and decision-making factors work well for mine.
Start with the math:
1. The area my cabin is in is extremely rural-as in no services for 25 miles. There were no VRBOs in the area when I purchased it. (There is one now, at $100 per night).
2. I bought the cabin as a distressed foreclosure for under $50k. Fixing it up (a type of work I find relaxing and enjoyable) brought the value to about $80k.
So, I've already made a hypothetical return on the mathematical part of the investment.
Life isn't about total return on income; it wasn't meant to be a financial investment. It's an investment in family time.
I run a small nonprofit and can rarely get away for more than a long weekend. The cabin "forces" us to go once or twice a month and enjoy time together. We like that it is ours-set up how we want it, with our stuff. Five years after purchase we are liking it even more.
If you are bored and want to learn about the area the cabin is in and the rehab: https://www.early-retirement.org/forums/f29/rehabbing-a-summer-cabin-built-in-1972-a-91836.html