To get even more comfortable and put less strain on the attachment points I recently switched to a Brazilian hammock for indoors. Because they are hung at about a 45 degree angle the suspension strain is lower than with the typical 30 degree camping hammock. Also their steep hang angle and long length lets you mount them to the ceiling joists at a spread of 15' or less. This puts my mind more at ease than using the 2x4 studs in the wall. I use pad eyes for the anchor points and screw them in with SPAX screws (#14x2-1/2")
Pad eyes. Item No. S3705-0008. $5.83 each.