Laid-Back Adventures in Another World from an Apartment in the Suburbs of Tokyo: The Case of My Room Becoming a Dungeon Rest Stop

An apartment in Tachikawa, Tokyo with 2LDK for only 30,000 yen in rent. I had a feeling it might be sketchy... but I was lured in by the cheap price and decided to sign the lease! Sure enough, it turned out to be a notorious property... No ghosts, but goblins and slimes... and even a female knight and sorceress show up! My room, which is connected to a dungeon in another world, has become a gathering place for all kinds of people...!?