Shefali, it seems a bit narrow to me as well, but I guess Xfixium did his calculations.
Xfixium: the dungeon looks really good, but something has been bothering me for a while now. And that are those switch blocks. You only use the red ones and not the blue ones. I know LA only had one color of block, but I think that had mostly to do with the limited colors possible on the original Game Boy. ALttP explicitly uses two color blocks in conjunction to form those switchable barriers. I am of the oppinion that those dungeons aren't really ALttP style unless they use both colors.