I used it several years ago on an old wall with dampness, without applying primer. Although the surface was not ideal, the result pleasantly surprised me. The paint lasted for many years without needing repainting and had very good coverage, as it covered quite a few square meters per liter.

An additional plus for me was that it was essentially odorless, which made the application much more pleasant, especially indoors.

Based on my own experience, a very good paint and an especially good balance of coverage and long-term durability.

I gave it 3 stars after comparing this color with Vitex Classic, which is not eco-friendly. I don't know the behavior of other eco-friendly colors. If by using eco-friendly products we take care of our environment, I would still choose an eco-friendly color, even if it gave me a little more trouble.
First time I paint with an eco-friendly color, I painted with the white one from Berling. Having painted with the same roller, I have the following to say about the comparison with Vitex Classic (very light gray, almost white):
1. Huge difference in favor of Vitex regarding the rolling of the roller.
2. Very good coverage of Vitex, moderate of Berling.
3. Very good performance in square meters for Vitex, very moderate for Berling, I used up 15 liters of Berling for 20 square meters (2 rooms) of walls and ceilings, painting over moderately dark colors.