Bedside Bassinet/Cosleeper for Platform Bed Recommendations?

Can anyone recommend a great bedside bassinet that would work for a platform bed that sits directly on the floor (ie no room for legs or base to slide underneath)? The top of the mattress is 18” off the ground. Last time I had the Halo Bassinest but it wasn’t a good fit because it had to sit away from the bed and baby was much higher than I was, which defeated the whole purpose of the thing. I’ve also looked at the Arms Reach Cosleeper but the lowest it fits are mattresses 24” high. Other ideas?