Highly recommend pub called Mistley Thorn- just 10 minutes to Harwich and awesome views of river Stour, lovely large rooms and bathrooms and wonderful food. They have a website.
We stayed at "THE PIER HOTEL" in Harwich in June. It was fine but not cheap. Very convenient for the cruise terminal.
Try the Holiday Inn at Colchester. They may have some parking/coach transfer deals as well.
There is a good hotel in Harwich called the cliff hotel Right on the seafron.
I strongly recommend the Marks Tey Hotel, in colchester but very close to Harwich. They have great rooms, health club with swiming pool, and fantastic restaurant. We also stayed there once for day board so checked in 1pm had room, swim, meal and checked out at 10am to board a late cruise. Cost 65, bargain. Website same name as hote.
Try the Pier Hotel in Harwic.
Beehive in parkeston Road. Friendly family run business, very hospitable. Book early as room limited. pirces very reasonabl.
Sorry, accommodation called THE HIVE (not Beehive). The Hive, 81 Parkeston Road, Dovercourt, Harwich, Essex CO12 4HE. 01255 503316. Best of luck.