I am from Eichwalde. The infrastructure is excellent. Only the schools are actually very crowded. However, the evangelical elementary school is supposed to open in 2027 and at the private high school, you can also graduate with the Abitur. But unfortunately, since the opening of the southern railway from BER, one has had to adapt to aircraft noise in Eichwalde (approach, not departure). So far, however, the noise is actually not or hardly disturbing.
Where I, as a resident of Eichwalde, have a big question mark is the development in the second row. Normally, such development is not allowed in Eichwalde. Eichwalde was founded and developed around the turn of the century as a villa colony with correspondingly large plots and is actually supposed to retain its special charm.
So be sure to clarify the buildability of both plots in advance!
Many greetings from Eichwalde