Your knowledge must be outdated, as Tallinn is actually currently considered vastly superior to its neighbours in the region, including Riga, Vilnius, Stockholm, Oslo, Berlin, ranking 17th amongst 195 capital cities globally.
https://news.postimees.ee/7955309/tallinn-ranks-17th-in-global-quality-of-life-index
Btw which countries you consider better where you can walk around with your cash in plastic bags?
Tallinn is immensely boring. And unpracticable during winter time, as they do not remove ice and snow from the sidewalk. Estonians are very good at marketing themselves, and at “arranging” statistics, but when you live there, you realize that Estonia is very much an empty ex-soviet country with big SUVs (there is nothing else to buy anyway).
Helsinki, which is 50km away, is much more interesting, and welcoming than Tallinn. If you forget about the taxes!
Baltic countries are shitholes, but you can stay there anonymously, no one cares about you, they usually respect a lot your privacy. There isn't much non-European immigration (Russians not included), and real estate is very cheap (especially in Latvia). Locals have mainly abandoned the idea of making near enough babies for their country to survive, many have left, so cities are never very crowded, and you have room to think and live. If you want to hide, this is a very good place. A lot of Russians live there undocumented. Everyone knows this, cash is widely accepted, it won't raise any eyebrows.
Since they are ex-soviet countries that haven't turned the page, most people there have no idea how to run businesses efficiently. It's a major pain, things like customer service or marketing are completely ignored, workers to do the minimum whatever the wage level. They often don't maintain their properties, which are often derelict, because they don't understand the capitalist game at play with real estate. This is part of the reason they're still poor, and it's very complex to do business there.