Koblenz HBF bus stop?

have a look here:

https://www.vrminfo.de/fahrplan/uebersichtsplaene/staedte/haltestellen/

Scroll down to Koblenz / "Haltestellenumgebungsplan - Koblenz Hauptbahnhof"

Thanks. So looks like you go our main entrance and on your right is the bus station. Platform E and E. I assume it is relatively clearly signed.

You have a great answer.

Note that Koblenz has another train station, so be sure to get off only at the HBF. As I remember, there is a large elevation difference between the trains and the bus stops. I would look for signs on the actual day, just to be sure there's not a change or interruption in your planned route. (Not trying to make you nervous, just describing a good travel practice.)

the bus stops are outside the HBF (at the busbahnhof)

https://www.google.com/maps/@50.3507388,7.5904628,3a,75y,166.26h,79.89t/data=!3m7!1e1!3m5!1sTPSQLC1QuA1HGZ6oqYQLQQ!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DTPSQLC1QuA1HGZ6oqYQLQQ%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D141.68443%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192?coh=205409&entry=ttu

If you go to the information booth in the Hbf and then go out the doors you will see the bus stops. They are in parallel rows with signage for each numbered bus.