I need to second this.
The controller software is a bit more complicated, but if you've ever had to mess around seriously inside your router's web interface, it's not really that big of a leap technically. There's a number of good YouTube videos.
My house is larger, and a lot of metal framing. WiFi before was dreadful, and I was constantly having to cycle airplane mode moving from upstairs to downstairs to re-attach to the access points. I think I lived with it so long because I trained myself.
I just did the UniFi setup with two access points in January. EVERYTHING works better. No weird pauses in NetFlix. I can wander the house without touching WiFi settings or airplane mode on my iPhone or laptop. I mean, I probably save 3-5 minutes a day compared to the stupidity I was dealing with before. Biggest regret is not having done this a year or two before.