I made my suggestion and am happy to stick with it, since I’m one of the few here who actually knows what they are talking about. One other being newnative.
It’s okay if you don’t understand it. That is not important. As long as the OP does.
Other than my suggestion, I think Northshore on the Beach Road fits with the requested requirements. Still a bit of a walk to Best Supermarket or Terminal 21, but doable. The alternative is a Bolt car or taking a Songthaew all the way down to Walking Street and back down to the end of Second Road.
Of course there is Central Festival, which would only require a walk down the Soi on the way back.
I took all this into account when making my suggestion. The OP understands that.