your statements in your review amazed me so much that I have to write a few words about it:
1. The headline of our listing is "Cozy 1-room-guesthouse". Therefore, I do not know exactly how many rooms you expected ☺ Nevertheless, the kitchen can be separated by a sliding door, the shower is through a room door a room for itself and the toilet-/laundry area through another door. The small hallway is separated by a glass door from the living-/sleeping area.
2. Our guesthouse is and has always been a non smoking house! We are all non-smokers and make no exceptions in this point, also because many of our guests have small children! None of our guests has ever complained about smells: Not on site and not later in the review. Since you have noticed this odor increasingly with the windows closed, I wonder if it could be possible due to the full diapers of your child or your used women toiletries that were over several days in the guest house when the temperature were more than 35°C... We noticed this smell also immediately after your check-out and had to apologize several times to the next guests.
3. Our house rules state that we charge a surcharge for the third guest - regardless of the age of the guest - as we also incur additional costs. I also wrote this explicitly when you made your booking. We have provided a children bed including sheets, mattress, bed linen, extra towels and a high chair. All this must be washed and ironed or cleaned. Each additional person also causes additional electricity, water and gas costs. There is more waste that needs to be disposed of, especially when there are diaper children. It's far easier to clean a guest house when there has been just two adults. Small children leave much more traces on walls, furniture, doors, windows, etc. This is not a problem for us, since we have three small children ourselves. But this is all extra work that we can not and will not do for free.
4. You have booked holidays in a 2-million-city. Therefore, a comment on the noisy street is unnecessary... Our guest house is located in a beautiful garden in the middle of a green district in a speed-limited-street. The subway and the S-Bahn are about 10 minutes walk away. And from there about 10-12 minutes trip to the city center or the harbour. We are therefore very central and yet in the green belt. I am very sorry that you obviously expected something different ...
I wish you all the best & many greetings, Maria & family