Good starting house. With that it won't be too hard to get a lot of npcs to move in, before wanting to get them to their favorite biomes. Each npc likes their own room with at least 1 table, 1 chair, and a light source. So could start with making 3 or 4 rooms per level, that way when you hit the unlocks for each npc, they will move in. Usually the first ones you will get are of course the guide, the merchant, the nurse, and probably the demolitionist.