It's great, but since I use it in very rare occasions I've switched to abiword (for word) and gnumeric (excel), which are lighter, because I'm not a heavy advanced-features user, for complex things I tend to other tools. Afaik libreoffice is a big monolithic program and each one of its components (writer, calc, base, etc) 'just' frontends, which isn't necessarily a bad thing, but I did not care for the most of it.