Perhaps the best way to look at a hospital stay of this type is for it's safety reasons.

It certainly isn't a vacation as one thinks of one, but to be released from all the stress of day to day living, yes.

A hospital is not a cure all. One goes to the hospital because they are not "safe" outside of watchful eyes, and are not able to follow the directions of their therapist, for whatever reasons.

A hospital stay is mainly to keep you safe until you can stablize, and make a plan of therapy that you can work with your T when you get out.

If you need the break to stablize... and certainly if your T is suggesting it... go.