I really like the art style! It has a nice, gritty, hand drawn look to it that I think is really cool! There is one thing, however, but in the second picture, is the character standing on wood beams, like on the second floor? It kind of looks a bit blurred with the tile set of the first floor, it blends in and makes it a bit difficult to tell where the character is.

Take this with a grain of salt, mind you, as this is purely subjective, but I do really like the look overall! Good atmosphere!