I have two chairs. I considered getting two tables.
The problem I found with the mermaid set (similarly to the sweets set) is that the pieces are all so small it's hard for the set alone to take up the space in a room. I fixed this by making the mermaid set my "seasonal" set that I place in my main room for the summer only. I also added a bunch of tiny things (like the mermaid statue, a harp, a vase, etc.) to take up more room too. With the added furniture and the 4 doors on each wall it makes it seem less roomy and I like that!