Any mattress size can be found at IKEA - IKEA Spain
MORGEDAL Foam mattress, firm, dark gray, Queen - IKEA
Ikea Hövag Pocket Spring Mattress in Dark Grey, Fixed (140 x 200 cm) : Amazon.nl: Home & Kitchen
Eco-DE Viscoelastic mattress Deluxe Alpes Massager with 8 or 16 vibrations and remote control, 28/30 cm, with removable and washable lid, available in all sizes 150x190 : Amazon.nl