I was not able to find a public forum of just reviews for the Ulster University Libraries however, I did find some on google which said that the Library had generally positive feedback especially with the 24 hr study spaces.

Reference: https://www.google.com/search?q=ulster+university+library+reviews&client=opera&hs=7vS&sca_esv=ebc9003c0e8ff0d8&sxsrf=ANbL-n6mKIlLS68Nx7-pHTJY0deZSKu3HQ%3A1771186964561&ei=FCuSafb5If25hbIPmojzoQQ&biw=1462&bih=718&oq=ulster+university+library&gs_lp=Egxnd3Mtd2l6LXNlcnAiGXVsc3RlciB1bml2ZXJzaXR5IGxpYnJhcnkqAggAMgcQIxiwAxgnMgoQABiwAxjWBBhHMgoQABiwAxjWBBhHMgoQABiwAxjWBBhHMgoQABiwAxjWBBhHMgoQABiwAxjWBBhHMgoQABiwAxjWBBhHMgoQABiwAxjWBBhHMgoQABiwAxjWBBhHMg0QABiABBiwAxhDGIoFSLEIUABYAHABeAGQAQCYAQCgAQCqAQC4AQHIAQCYAgGgAgeYAwCIBgGQBgqSBwExoAcAsgcAuAcAwgcDMi0xyAcGgAgA&sclient=gws-wiz-serp

Reference: https://universitycompare.com/universities/ulster-university/reviews

I decided to have a look through some Ulster University reviews and I seen a review for the Coleraine campus to which they mentioned about the 24 hr Library service which is available throughout all of the campuses!

It seems that this feature in the Library is a great way for students who are more academically productive at night or want some peace and quiet when they are studying, this seems to be the most repetitive thing that are in the reviews is about how the library is open all of the time for students.