Initially, it was alright, but the story's elements are too much plot-oriented in an order that makes thing too simple/easy. The only struggle they seem to face is occasional strong foes that ends up as trash later and their social/emotional response (which are already limited). It's like if the story wasn't though up properly and the writer/author forgot what he started at. The guy is homeless so he has a bit of survival skills, but ends up not needing those skills because he found a magical hidden and safe house that has even more stuff than "normal houses" in that world because a random magician lived there a long time ago. As soon as his emotional stability starts to show a single weakness, there comes the emotional support boy out of thin air and that boy is not only strong, but useful. As soon as they get outside, they face a problem (which was poorly written since it seems people are just stupid in that world), and immediately have an escape route to their perfect house that nobody can even reach. That problem flies away not even 1 chapter later as they are able to move in town and buy stuff easily just to get another random "added-over-a-pill" problem that wasn't ever explained before.
Basically, this isekai universe seems to inhabit people with the red fish syndrome: Move 10 secs one way and forget what happened before.
It's not the worse isekai, but it's clearly not in the great ones neither. I would give this a 5.5/10 at most for now.
All in all it's not a bad isekai but not a good one either. 
