Sakurasou no Pet na Kanojo is an average anime. I'm not saying it's bad, just that it's completely in line with what you would expect from a romantic-comedy set in a high school whose protagonists are teenage kids. It's entertaining and enjoyable if you like this type of anime, but it doesn't deviate much from the standard clichès of the genre for what concerns the plot and the characters, especially so for the male lead. I wonder why anime creators seem incapable of producing a male lead with some personality. After you've seen a number of anime like this, with always the same kind of indecisive, wishy-washy, boring and clueless male protagonist, it gets very frustrating: there's no understandable reason as to why he should be surrounded by multiple girls who inevitably end up falling in love with him. In this case, you have this completely normal high school kid who has no idea about what he wants to be when he grows up whose life gets turned upside down when he meets a girl who is a prodigy at painting and with very clear aims for her professional career, but is at the same time completely inept at looking after even her most basic everyday-life necessities. So boy meets girl with an additional twist given by the fact that it's mediocre-boy meets genius-girl. This plotline gets repeated and kind of hammered into you because there's two of the secondary characters who are in the exact same situation. And how this is presented and developed makes for a good watch. Apart from the predictable protagonist threesome (boy + two girls vying for his attention), there are at least five other secondary characters (once again, anime stereotypes) who are likeable, all have a back-story (at times overly-simplified), a definite personality and undergo some development. Apart from the prodigy girl meets average boy theme and the trivialities about finding what you're passionate about, fighting for it and working hard to make your dreams come true, there's also the topic related to the value of friendship and interpersonal relationships. Obviously regarding the love story, our male lead is absolutely clueless as to the girls (and his own) feelings. So it's all very innocent up to the very end. No surprises.
Overall, it's enjoyable and at times emotionally involving, but not particularly memorable.