Level is a low cost airline and therefore you should know beforehand that all extras ( anyhting from luggage, seating to headphones,etc) must be payed for apart. The seats are not very comfortable and sort of crammed. But I guess that is what you should expect when booking a low cost airline. The only thing I want to point out is that the food that was offered, and that we had to buy, was really bad, very few options and very scarce, so much so that on our filght to Barcelona, beverages and food ran short and there was not enough to go around. On the return flight we were prepared and boarded with our own food and a bottle of water which made things easier. I strongly reccomend you do the same. The airline permits it.