inside wall repair

depending on where it is build a shadow box or storage shelf

Then your best looking option is to remove the portion of the wall, throroughly dry or replace the insulation replace the wall board with something similar and paint. Remember, once its wet mold can set in quickly. So you need to get the wall opened up and let it dry completely. If this is on an outside wall, and depending on construction it could also involve the siding underlaymant.

nope ,, nice idea

Do you have a nice RVing picture that could be hung over the spot?

aluminum frame, and yes the leak is fixed.

You don't say what the construction of the unit is - wood frame with aluminum siding or aluminum frame with fiberglass. If a wood frame, a "soft spot" usually indicates rot from water incursion and entails MUCH more than just repairing a small spot. To do it right, the inner and/or out panel(s) need to be removed and the framing replaced - and figuring out how the water got in in the first place.

Rob