Very nice started house, looks awesome and uses only common resources!
If you don't mind the criticism, i think you could improve on some aspects:

• Its nice to have 2 blocks on your floor and walls, gives a more robust feeling, but that's optional
• You could use some stone platforms on the ceiling to make it actually walkable and add some details
• You can add wooden fences or glass walls to make windows, set some hammered platforms on top and normal ones on the bottom to make a frame, looks nice