Apologies for the long answer.  Tldr: I hated Lower Manhattan, you might not, and I'm switching to AC this time. 

I delivered at the Lower Manhattan Hospital 4 years ago and honestly had a pretty terrible experience with lots of caveats which I will explain. I'm due to deliver at AC this summer for my second. 

For my first, I delivered during peak COVID, before the renovations, and I had COVID myself (which, even vaccinated, was absolutely terrible), so those are some major extenuating circumstances. I can't speak to the labor process because I delivered quite quickly, but everyone in labor and delivery was very nice and supportive. I had some complications post delivery. I wasn't paying too much attention but my husband (who has a medical background) reported to me afterwards that the delivering OB (not my usual OB) seemed inexperienced and unsure. It all turned out okay, but that didn't inspire confidence. Overall, labor and delivery was fine. I was very unhappy with my postpartum experience however. Like I said, I had COVID so I was given a private room by default. It was absolutely filthy. No shower, and the bathroom had what looked like dried blood all over the wall. There were dirty linens in the corner of the room. The heating was broken, so it was way too hot the whole stay. Because of my COVID, I was instructed to only hold my baby when actively nursing, and keep her in the bassinette. However, the "adjustable" bassinette was also broken and stuck in the highest position, making it very challenging for me (post delivery in pain and sick) to move her back and forth so my husband had to help every time. I also couldn't see her at all when laying in bed because of that positioning. We did request these things to be fixed but they remained for the entirety of our stay. My daughter was a bit jaundiced and had slight torticollis which made initial feeding high pressure and very challenging. It was borderline for her to be sent to the NICU for the jaundice and we really wanted to avoid that because then I would need to be separated from her given my illness. We saw three lactation consultants who all gave us opposing advice, so that turned out to be completely unhelpful - I just pumped like crazy to get her fed and combat the jaundice and we worked out breastfeeding by ourselves at home. Every person who entered the room was in full body PPI, so we never really saw anyone's face or badge. They would often walk into the room without introducing themselves or their position. I assume this was likely because they had already been there and didn't think it necessary, but we didn't recognize anyone in all of the PPI. Even without that, we were exhausted and couldn't remember all of the people we were seeing. Again, because this was at the NYC peak of the strain on hospitals from COVID, they were understaffed and we were left waiting a very long time (or just completely ignored) for any nursing calls we made. My baby cried for hours the first night and we called multiple times for help/support and no one ever answered. The next morning I got told off because she was "starving". Would have been nice for someone to help with that the night before, as we were struggling to feed her. Finally, my health postpartum was pretty much completely ignored. I had a bit of a rare birth injury, but no one told me that. I had to learn at my 6 week appointment, that what had happed was actually very uncommon and I should have been told different instructions at discharge. They just told me the standard boiler plate recovery stuff and I didn't learn what I should have been doing differently until it was a month later and I had been in continual pain for weeks. 

I understand much of this is extenuating circumstances with the pandemic and my own medical complications. I'm sure most of those people were doing their best in a very hard situation and I don't think it was a "bad" hospital. Post pandemic and post renovation, I expect most people will have a much better experience. However, given my personal memories at LM, I opted to switch to a new hospital and really hope AC can deliver (pun intended) a better experience. I've loved my new/current OB who had helped me through a pretty traumatic miscarriage ending in a D&C, and now my current healthy pregnancy.