Thanks first of all for all your assessments!
We will contact the developer again regarding the bedroom and knee wall.
Regarding the knee wall, we thought that just under 90cm would be quite good, after seeing houses with ~60cm. That was definitely too low for us.
But under a 90cm knee wall, you should be able to place a normal double/children’s bed, right? I don’t want to use it as a trampoline... but as I said, we will ask anyway. Higher is of course always better.
Again about the position of the carport... do you really see such a big problem there? Sure, it blocks quite a bit of the view of the house when standing in front of the property, but behind it there would only be the utility room anyway. In summer, the sun should be high enough so that we still have sun on the terrace... and as I said, we don’t see any other option for our property if we don’t want to park the cars one behind the other.