As long as you don't want to screwcut, a plain lathe is OK. You certainly learn how to feed steadily. Having been made before the days of drastic cost cutting, a heavy machine is likely to be more rigid.
If you can get the machine at sensible price (You mentioned Euros, don't forget the shipping / import duty costs! )
And then a motor and drive arrangements have to be bought and set up.
it may well be a satisfying first machine and learning aid, whilst you restore it. If it lacks graduated dials, you can make these, although you may need ingenuity or help in graduating them.
Restoration can be part of the hobby
I have used a little Loughborough plain lathe at The WaterWorks museum from time to time, and get on well with it. Prefer it to the big Colchester if truth is told.
If the machine is in reasonable condition, you can make some accessories with it, such as a Centre Height Gauge Tailstock Die and Tap holders, Floating Reamer Holders and a Mandrel Handle. ( Very useful for producing threads with Taps or Dies ).
All these will extend the range of work that can be done on the lathe. And in making them, you become more familiar with the lathe whilst you gain confidence and skill.
Hope that you eventually find what you want, but don't bite off more than you can chew successfully with the knowledge, skill and facilities available to you..
Howard