IMO, that's a pretty critical location (looks to be right at the front wall). I would take it to a local welder and ask them to weld a bit of steel plate over the dent to strengthen that location. Should be a pretty cheap insurance.
2011 Jayco X19H (purchased 2015)
2008 Jayco 1007 PUP (purchased new, traded for the X19)
2018 Nissan Titan Midnight Ed.