I'm in the US so I'm not sure if they ship to you, but I bought this folding mattress for my guest room and it gets rave reviews from everyone. Cheap, folds up and works as a little bench/sofa when not in use.

Folding Mattress, Inofia Memory... https://www.amazon.com/dp/B085LB7KQV?ref=ppx_pop_mob_ap_share

Full! It’s a tri-fold 6 inch memory foam mattress from Amazon. Folding Mattress, Inofia Memory Foam Tri-fold Mattress with Ultra Soft Bamboo Cover, Non-Slip Bottom & Breathable Mesh Sides - Full 6 Inches https://www.amazon.com/dp/B085LB7KQV/ref=cm_sw_r_cp_api_glt_fabc_ZAVRYWDDA8MWPCW62D8T?psc=1