Sorry to burst your bubble ....
I know Knysna well, and I own a 180-degree unobstructed sea-view home in Brenton-on-Sea, close to Knysna, which I rent out. Would I live there permanently ? Never! Knysna & surrounds is great out-of season, but in-season (Easter, Xmas & New Year seasons) it is a mass of seething tourist humanity.
Then they have all thse festivals ... Oyster Fest, Pink Loerie Fest

, and a couple of others, when many visitors (of various culinary, and sexual, persuasions ...) flock into the area to partake of the festivities.
Traffic is a nightmare. Restaurant service is atrocious (read: non-existent). Traffic Cops are over-eager. Local residents do one of two things ... (1) go all out to rip the visitors off, or (2) disappear from the streets and shops and restaurants until all visitors go home (or maybe they disappear into the forests where the attempt to re-establish the once-famous "knysna woodcutters" colonies ... a largely interbred & strange community :wtf:
But if you DO ignore my advise, and go there ... :twisted: I'll give you a good rental on my sea-view property! Current tenants moved out a month ago ...