For a C3 cabin, Solstice's 1030 left us very satisfied. It is near the forward elevators, so quite convenient to the Solarium which we enjoy, but not so near them as to cause commotion. It is, of course, a long walk to the rear elevators and all the dining venues, so if that is an issue it may be worth spending a bit more for a C1 or C2 more midship. We found the walk good exercise and it didn't bother us a bit.
Our drunk next-door neighbor leaned over the balcony divider (which I wish were more of a divider!) an hour after boarding and made a smart-a@@ remark about getting naked and partying, but thankfully in our brief cruise which was cut very short by a medical emergency, we didn't see this wiseacre again. Other than his intrusion, the cabin was quiet during our time there.
It was, of course, beautifully furnished in subtle colors we found soothing, well kept-up and thoroughly functional, with carefully thought-out storage space and a bathroom we thought well above average for ships. The desk/vanity space is very limited and would barely accommodate my laptop, but we were expecting that and brought a small multi-pocket hanger for the closet to accommodate things we normally would have left on the desktop. We also came prepared with a short, multi-outlet travel extension cord as the plugins at the desk were inadequate and wouldn't work w/our various computer, Kindle and camera chargers. The bedside tables are the size of postage stamps, but again we were prepared for that.
Posters here on CC sometimes say that the Concierge Class balcony footrests aren't worth paying the upgrade from Balcony class for, but we disagree -- they make a big difference in comfort and relaxation while outside.
All in all, would book this cabin again if we didn't want to spend a bit more money on a midship location -- or, more to the p[oint, if we ever book a Celebrity cruise again!