"The Mornington Hotel Stockholm City has some clear positives that make it appealing at first glance. The location is perfect—right in the heart of Östermalm, close to shopping, restaurants, waterfront areas, and easy access to central Stockholm attractions. The room size is OK for a city hotel (nothing huge, but functional), the bed is quite comfy, and the breakfast is genuinely good with a nice variety of options.
However, the negatives heavily outweigh these for me. The rooms are very noisy overall poor sound insulation means you hear everything from neighboring rooms, including constant banging doors. If you get a room on the "wrong" side of the hotel, it's extremely noisy and disruptive. At night, around 4am, the noise ramps up even more because staff empty garbage and (especially) clinking empty bottles right outside. On top of that, the room temperature was ridiculously high, stifling hot with no effective way to turn it down or cool it properly.
Despite the good location, comfy bed, and solid breakfast, these issues made sleep almost impossible and the stay frustrating. I wouldn't choose to stay here again."