I'll tell you what's not to like.
Because we like to be tidy, it takes me longer to straighten out the duvet, pillows and bottom sheet, on the fixed bed, as it did to put away the "made up" bed, in our previous motorhome.
We could, of course, be like slobs, and just pull the curtain around it, but we do have standards, which we both like to adhere to.
As regards "A" class motorhomes, they wouldn't be for me, 'cos I like an afternoons kip.
Also, most "A" class, are a pain to work on, because of the restricted access, under the bonnet, which means you pay more for professional servicing/repairs, due to the extra time that it takes, or you suffer the pain, if you carry out your own maintenance.
Think, before you buy one!