This is a neat little unit and will accommodate a minimal case (bot nothing too chunky). Build quality is very good, the battery backup option is good, but they won't last too long taking just 4 AAAs. I have it on my bedside table for charging and the odd bit of music while reading or (using the batteries for portability) doing a bit of DIY.
Personally I find the sound disappointing. It's flat and a little tinny. I wasn't expecting anything spectacular but did hope for more than it delivers. It's still listenable and free from distortion for the most part, while the volume is impressive. Will easily fill a large room with your questionable taste in music!
Until Lightning-capable speaker docks become the norm, this is probably your best option in the short term at this price point.