I want to add one thing just so you know (this applies to the US, I didn't see an answer as to what country you're in). The word "voluntary" can be very misleading. Yes, you can admit yourself voluntarily, and you have a few more rights than patients that are admitted involuntarily. However, you can NOT check yourself out or leave by your own decision in any way.
Technically, while in the psych ward you have the right to request a doctor come and asses you to decide if you are stable enough to leave. However, I have not once in over 10 psych stays seen a doctor allow a voluntary patient to leave because the patient wanted to leave. People have had all sorts of reasons, from their children having surgery to job interviews to just desperately wanting to get out of there, and never were they allowed to leave. They had to stay there until the doctor came to see them without them requesting it and decided they were okay to leave. That always ended up being around the same amount of time the rest of the voluntary patients who HADN'T requested to leave were there.
Voluntary just means you entered of your own free will. From that point on you cannot leave until the facility says so. I just want to let you know that, as it can be an unfortunate shock for people who thought they'd be allowed to leave.
As for the rest of it, what people have already said about the quality of care depending on where you go is very true; it could be great, it could be terrible, it will likely be somewhere in the middle. If you do go, be prepared for a bad experience but be hopeful for a good one! You're strong to have made it to this point, and you should definitely find out if you want to live.