I've had the same experience, though I've only used a handful of them. It's definitely worth it for us since we use them for reunions, so there's >20 people staying there and we value the larger gathering areas. I never use them for just us (wife and kids) because it's not really price efficient.
That said, when I start in a hotel, I usually clean up after myself. I know the cleaning staff get paid poorly, so I leave a modest tip and do most of the tidying myself.