Selection of plot, considerations

like the streets, playgrounds as general areas and is allocated to everyone in the development costs.

Regarding property "M": so a WEG property.
Does Müllplatz mean that the bins are always kept there?

Regarding the bins:
For the purpose of regular waste disposal, the planned street B will not be driven on. The waste containers, recycling bags, as well as bulky waste must be placed at the Mülltonnensammelabstellplatz (M) marked in the development plan on the day of collection. (Development plan)

The buyers of properties 3, 4, 5, and 6 purchase, in addition to their building plot, the parcel 949 with 30m2 as a communal waste bin collection area, as the bins of these properties are placed there for collection, since the waste collection vehicle does not drive on the western section of the street. The purchase price for this is €100/m2. (Exposé)

Found it:
“The residents of Planstraße B are obliged to bring their waste containers, material sacks, and bulky waste to this location on time for collection and to remove them immediately after collection.”

The buyers of plots 3, 4, 5, and 6 purchase, in addition to their building plot, parcel 949 with 30m2 as a communal garbage bin collection area, since the garbage bins of these plots are placed there for collection, because the garbage truck does not drive the western section of the street. The purchase price for this is 100 €/m2. (Exposé)

I've never heard of that before. Who spends an extra 3000€ on garbage?
Just wait… such things can be changed quickly. An exposé is just a piece of paper…

The residents of Plan Street B are obligated to do so

…and paper is patient. Everyone is obliged to remove their garbage bin from the street as quickly as possible. …

…and paper is patient. Everyone is obliged to remove their trash bin from the street as quickly as possible. …

At least there won’t be 4x4 = 16 different bins standing in the tightest space in front of the property, nor any trash bin cage built there. Sure, sometimes they are only brought back in the afternoon.
If the property M didn’t exist, I probably wouldn’t have given the bin placement situation at the street entrance so much thought. Then property 9 in the northeast would have been surveyed up to the street, and the bins next to my property would still be standing there weekly. The separate property might cause the bins to stay there a little longer because the access to the street remains easily accessible... otherwise, I am relaxed about it.

I have been walking past our trash bins many times daily for a year now; they are still standing against the house wall on the way to the car/driveway. When the lid is closed, you can't smell anything there even in summer at 40°C. However, if you open the lid, you’ll faint...

Trash bin spaces for private roads are standard here? The residents of private roads also purchase the street and have to take care of utilities, drainage, etc. themselves. It is not called a private road because it belongs to the city or public space.
Sure, 30m² is quite a lot; here, about 5 or 6m² are indicated on the plan for the bins of 4 parties.
But you buy that space; no one gives it to you.

I don't want to live by footpaths and bike paths. Firstly, there are constantly strangers, cyclists tend to talk loudly while riding

We live on such a "school route". It doesn't bother us. Our dog is triggered by the "talking hedge," but that can be managed.

because the bags are not odor-proof.

Ours are. The others' bags are too. The rotting organic and garden waste smells disgusting.