Your note is confusing, from my perspective.
Please let us know when you are traveling, as requested in the forum rules.
www.myswissalps.com/fo rum/rules. It can make a big difference in the Alps.
<<"the key is that we like to eat and drink wine, so we enjoy a late supper and drinks and want some options, which is why we have decided that Lauterbrunnen Valley is probably too small and laid back although logistically is a good location.">>
The Lauterbrunnen Valley meets your specifications.
Nonetheless, many of us prefer Wengen, which can meet your requirements, too.
My own opinion is that Grindelwald is too spread out, too commercial, and lacks charm.
However, it seems that you have chosen Wengen, so I am puzzled by your question about which base to use...
Parkhotel Schoenegg in Wengen is one of the best, and not inexpensive. Usually, an outstanding kitchen , which you will pay for. Good location.
I've not been at the Alpenrose for many years so I don't trust my memory, but I recall that it was not in the luxury class of the Schoenegg. A bit of a downhill walk from the station? Several hotels have similar names........
<<"do not ski or partake in physical activities, however we would like to do some easy to moderate hiking.">>
Check those hikes that you listed in the "What to do / hiking" pages of My Swiss Alps. Some may constitute physical activities that are outside your comfort zone. They vary in difficulty.
Männlichen to Kleine Scheidegg is rather easy, and spectacular....on a clear day.
It will be hard explore all of those locations in the time allowed, unless you choose to merely touch the ground and turn around.
The timetable will allow you to understand the time required for the travel between them:
You an use the information available on those locations and how to get to them, by searching on My Swiss Alps.