Those are fine and could be asked at any time. Especially with no or online visits only, the experience of others who have lived in the dorms you’re asking about is valuable. However, this particular question has been asked many times, so you might want to do a search first before you ask. If it’s a school discussed here with any frequency, you will get plenty of hits. Here are some examples:
What doesn’t make sense to post is which school is best/best for me? No one here can answer that. We don’t know you and, even if we did, we couldn’t make a better decision than you can (and will).