Since I don’t know you, it’s hard to say. I don’t see anything wrong with those comments.
Every job I’ve ever had evaluations in (about 90%) are based on the assumption that I can do better. They always included suggestions on how I could do better. I have a full bed but if I got lots of comments about a queen bed I might consider getting one. Space bigger than expected sounds complimentary to me.
As for how you might change your reactions to constructive criticism/compliments, that’s above my current pay grade.
As has been pointed out we are a forum for hosts, not airbnb. I can almost guarantee that no matter how questions are worded you going to hear things you didn’t want to hear.