A much better alternative was made here https://github.com/Michsior14/ha-venta, so I decided to archive this repo

Venta Home Assistant integration

Supports Venta LW73/74 with Wifi modules. Potentially supports other models

Exposes following entities:

• Humidifier
• Light
• Temperature and Humidity sensors

Installation

• Clone the repo into config/custom_components
• Enable in the configuration.yaml:

light:
  - platform: venta
    host: http://192.168.0.123 # Humidifier's IP

humidifier:
  - platform: venta
    host: http://192.168.0.123

sensor:
  - platform: venta
    host: http://192.168.0.123