Hello. Due to the fact that the humidity in my apartment remains at an average level of 70%, I started to get into the topic of ventilation. The case looks from scratch:
1. I live in a 4-storey block on the top floor. Apartment plan below. The block is insulated.
2. The ventilation chimney goes out about 1m above the roof, which is a bit low for my draft.
3. The ventilation grille in the kitchen pulls as much as nothing, although according to the chimney sweep who came for the measurement with a "fan" is within the norm.
4. The block is from the 80s and I am connected by a ventilation chimney with a neighbor from the second floor, i.e. the use of an extractor / fan in the kitchen grille falls off.
5. There is a gas cooker in the kitchen (gas installation in the block).
6. I installed the diffuser above the window in the large room ("plastic" windows
I do micro-sealing in the windows but the situation has not improved much and in addition it started to get too cold in the apartment and ...
7. ... I can't heat up because the cooperative makes a scam with a company that has installed heaters and light heating during the winter period ends with a surcharge of 3-4 thousand (people are powerless because everything is "in accordance with the law" = no comment) .
On the other hand, without heating, the temperature that stays in the apartment in the winter is 21-22 degrees, but below it can not fall by unsealing the windows because it will be too cold (one-year-old child).
8. I bought a condenser dehumidifier 20L / 24h, 250m3 / h. I won't say it works, but only in the room where it stands. Unfortunately, its noise (like one of the quietest of its kind on the market) is hard to survive in the long run.
A hopeless situation L Can you do something about ventilation on your own?
What I initially invented myself in relation to the above (picture below):
1. Change the ventilation grille in the kitchen and toilet to one that can be easily closed and opened.
2. In a large room, make a hole in the wall (under the window) and install a ventilator with a heater with adjustable parameters. It will go out on the balcony so there should be no problems.
3. Cut out the glass in the kitchen window and install the adjustable hood (fan).
4. At the top of the toilet and bathroom door make a cut out for moisture emigration.
Please verify this idea for proper ventilation. Unfortunately, I am afraid that this will not be a good solution (for various reasons), therefore I am asking for any help, how can it be done correctly and can it be done at all?
1. I live in a 4-storey block on the top floor. Apartment plan below. The block is insulated.

2. The ventilation chimney goes out about 1m above the roof, which is a bit low for my draft.
3. The ventilation grille in the kitchen pulls as much as nothing, although according to the chimney sweep who came for the measurement with a "fan" is within the norm.
4. The block is from the 80s and I am connected by a ventilation chimney with a neighbor from the second floor, i.e. the use of an extractor / fan in the kitchen grille falls off.
5. There is a gas cooker in the kitchen (gas installation in the block).
6. I installed the diffuser above the window in the large room ("plastic" windows

7. ... I can't heat up because the cooperative makes a scam with a company that has installed heaters and light heating during the winter period ends with a surcharge of 3-4 thousand (people are powerless because everything is "in accordance with the law" = no comment) .
On the other hand, without heating, the temperature that stays in the apartment in the winter is 21-22 degrees, but below it can not fall by unsealing the windows because it will be too cold (one-year-old child).
8. I bought a condenser dehumidifier 20L / 24h, 250m3 / h. I won't say it works, but only in the room where it stands. Unfortunately, its noise (like one of the quietest of its kind on the market) is hard to survive in the long run.
A hopeless situation L Can you do something about ventilation on your own?
What I initially invented myself in relation to the above (picture below):

1. Change the ventilation grille in the kitchen and toilet to one that can be easily closed and opened.
2. In a large room, make a hole in the wall (under the window) and install a ventilator with a heater with adjustable parameters. It will go out on the balcony so there should be no problems.
3. Cut out the glass in the kitchen window and install the adjustable hood (fan).
4. At the top of the toilet and bathroom door make a cut out for moisture emigration.
Please verify this idea for proper ventilation. Unfortunately, I am afraid that this will not be a good solution (for various reasons), therefore I am asking for any help, how can it be done correctly and can it be done at all?