A pack n play has its good and its bad, but as far as safety in using it AS a crib, it's completely safe for Baby. Not quite as convenient sometimes for transferring a sleeping baby who's outgrown the bassinet attachment. And I used to change my baby right in the crib at night or when we were in the room when she needed changed (we didn't have a changing table, had a tall dresser instead of a long short one, and had barely enough floor space in the bedroom to walk), which is nearly impossible to do with a playpen. But it comes in handy when you have to travel and Baby doesn't sleep well in a different environment or don't have a nursery. It's a matter of preference and which conveniences are most important. I had a friend who lived in a long-term stay hotel from late in pregnancy until the baby was a year old. You know she used a playpen as a crib and doubled a bouncy seat as a high chair too.