Rock N Play. Mixed feelings

So last night we tried the rock n play for the first time with Indigo. He slept for 3 hours in it 😮 we also have formula so he would not have to get up as often (night before was every single hour 😳). So he slept all night in the rock n play, loving it. Woke him up every three hours for feeds and changes, then he was out like a light as soon as he was back in it

I know it’s not supposedly be used for overnight sleep, but my husband and I actually slept a little more than we had with him in it instead of his baby box. I don’t know how to feel. I just want him to be safe, but he’s also sleeping really well in it.