I fly LAN fairly regularly, and they're very helpful, especially traveling with my service dog. The flights are rarely off schedule (helps to have pretty constant, moderate weather conditions) The snack boxes on the short-hops are just about perfect, for killing time & having a little nibble.
The attendants are always very gracious; never had a snarly one, like you often get on North American airlines these days.
The seating is comfortable & they will often open both front & rear doors, to speed up disembarking.
The luggage arrives remarkably quickly on the carousel and I haven't lost one yet, despite most of my flights being connectors.
Overall, they provide a very pleasant flying experience. Highly recommend them.