Hi, I’ll be staying in Cochem for 5 nights and will need to make trips to Aldi to do grocery shopping (which is around 45 mins away by foot from my airbnb). Can I check how easy it is to call for a taxi in Cochem? Do the taxi companies speak English? Will need the taxi to go to Aldi and return from Aldi after
I have never found a taxi necessary in Cochem, so can't answer your question directly. Personally, I would take a bus. The main square in town (Endertplatz) sends off buses to the "Einkaufszentrum Cochem-Cond" shopping center stop, a 7-minute trip. I would then walk (3 minutes) to the Aldi at Markweg 1 from there. The route has multiple bus options... for example...
Bus 712 leaves Endertplatz every half hour at :29 and :59 after.
https://ekap-download.vrs.de/downloads/linien/mini-fahrplan/2024_3712_VRM712.pdf?1724250046
You can find all bus connections between the above-named stops by using the trip-planner:
https://www.vrminfo.de/en/timetable-info/
Of course I don't know where you are staying exactly. Maybe you will need one of those folding two-wheelie grocery baskets if you plan on a large haul. You can take those on the bus.
Otherwise, there are taxis in Cochem. Just set them them up well in advance as there maybe only one or two drivers available.
https://en.visitmosel.de/cities-culture/poi/taxi-cochem