We were at Overwater for three or four years with our shareboat. Office staff very helpful, as was Simon in the workshop.
Cruising options are not too bad, we usually either stopped on the embankment at Nantwich first night, or the bottom of the Audlem flight, for the proximity to pubs. Barbridge was do-able, but due to time constraints of when we got onboard with being a share it meant you were quite late to the moorings and most were gone. Not a problem if you don't mind a nice walk after the pub dodging dog eggs on the towpath.
if you have a pump-out loo, the machine is timed, so get everything ready before you pop the token in to ensure you get everything done. Think it was £16 a go if memory serves. Working as a team, the wife and i could easily do both loo's on the boat in the allotted time (usually just use one, but both if taking in-laws too) but we have seen folk have to go buy another token due to faffing about.
the cafe & wheelyboat mean you can sometimes have quite the audience whilst steering onto the services (two coachloads of grannies was my worst) so bear in mind if you're shy
We'd not have a problem moving back