Rock n' play for overnight sleep

Someone make me feel less guilty for using this! I broke down and bought one last night and let me tell you - I got the most sleep ever in the 5 weeks and 3 days my baby girl has been here. She doesn't like to sleep in her pack and play bassinet and would wake up all the time. Last night I had to wake her up twice for feedings - that never happens! I just read how it's not the best since it's not a firm, flat surface. And I also used the rocking feature the whole time...I do plan to wean that off though.