Wrote a review on this, here it is:
https://terrenceswiff.wordpress.com/2016/02/22/jigokuren-love-in-hell/
At the time I chose to review this due to the first volume of the sequel series beginning to be translated. I like this series. It goes without saying: content is NSFW.
I think there was some more meat to this concept, but at the same time I always have respect for series that end without dragging on.
Pretty fun premise and a good enough story overall!
Its a great concept, probably could have had a spin-off/continuation manga (?) but it did end a bit abruptly and something else after would have been nice.