For daytime, two hotel spas stand apart. Chi at Shangri-La offers stand-alone villa suites and local herbs, while YHI at Meliá uses Lanna herbs and heat. They close at 20:00 and 22:00, so time them clear of evening plans.
Around the Night Bazaar, Let's Relax Pavilion gives the widest choice of rooms for an evening, with ten Thai rooms and six oil rooms open until 23:00, convenient after shopping.
Near Tha Phae Gate, Lila Thai Massage bundles foot, hand, back, head and herbal compress into one package, and Let's Relax Thapae opens at 13:00 and runs to midnight, which suits an afternoon after a free morning.
In the Old City, Relax Express (10:00-24:00) fits a short stop, Makkha Ratchadamnoen (to 23:59) offers natural essential oils and luggage storage, and Buri Dhara trades on Lanna handicraft atmosphere. Shower rules after dry massage differ by venue, so check each one.
Before booking, confirm the last booking time and whether a room is guaranteed. Holiday hours can change, so use the current product details as the reference.