I fly long distance multiple times per year, and have experiences with many carriers. This was my first time with Iberia and although not a horror story, it was definitely the worst of the 8+ hr flights I have taken. The plane was a bit older and not very clean. Lots of scratches and marks on the chairs and walls. The drinks service had limited free items, all spirits/cocktails required extra payment to purchase. The food was disappointing, not presented well at all (I was given a lone burger patty with some potatoes next to it). This on its own was not too bad, but there were some additional annoyances that stood out. The seatbelt sign was left on for over four hours in a row near the end of the flight (with no turbulance experienced at all) and they would not offer any drinks at this time and often told people they should not be using the toilet. Additionally, the tempurature was kept lower than I believe I have ever experienced on a plane, multiple people were coughing and shivering during the second half of the flight. Along with poor service experienced (attendant arguing with family trying to board their wheelchair-bound son) make this an airline I will avoid in the future.