On the first night we had to ask the room service to change our bed sheets, as there was a big stain on it. After not picking up the phone three consecutive times, finally someone came and changed the sheets for us. For a 5 star hotel this is really unacceptable (not seeing such a stain in the first place and also the way it got handled by the staff). We didn't get an apology for that incident either. Overall the Shangri-La seems highly overrated. The breakfast room is rather noisy and very crowded. I would almost call it chaotic. There are enough (cheaper) alternatives in Bangkok. We will not stay in this hotel again.