Where do I shop for a good mattress?

[chydals]

You can search for 床店 Kaohsiung
Usually they have delivery service to your place and can help you pick up your old mattress

Mattress sizes (Taiwan)

Mattress sizes (IKEA)

Sources:

床墊尺寸 | 台規、美規、歐規、日規床尺寸差多少？

台灣IKEA和台規床墊尺寸的差異 @ 黃大偉理財研究室 :: 痞客邦 ::