Here are a few quotes from the reviews:
"a spookily topical and entertaining endeavour" ★★★★ Evening Standard (Barry Millington)
"a clean bill of health for this operatic satire on the healthcare system"
"a sharply observed piece of social commentary"
"a pretty unimprovable contemporary premiere by the young musicians of Solomon's Knot"
"a superb cast" "James Halliday's virtuosic band"
"the impeccably tuned clarity of two Gesualdo madrigals"
"it's a rich selection of solo voices, but most striking is the blend they achieve in ensembles"
"Solomon's Knot have personality in buckets" ★★★★ The Arts Desk (Alexandra Coghlan)
"an hour of delectable light operatic entertainment"
"the magical voices blend beautifully in the warm acoustic of Wilton's"
"good, riotous fun"
"L'Ospedale is a treat - go and see it" ★★★★ Bachtrack (David Karlin)
"Solomon's Knot's first operatic venture is an artistic triumph"
"a performance of tremendous enthusiasm and earnestness"
"a welcome reminder that the major opera houses in London do not monopolise the market in imaginative, innovative productions of musical theatre" Classical Source
"the music was a delight"
"the singing, and acting, was outstanding, both as soloists and in the many choruses"
"this is a show well worth experiencing" Andrew Benson-Wilson
"an operatic Carry On Matron, only darker"
"this first modern performance satirises the failings of mental health care with admirable imagination"
"the small instrumental ensemble expertly directed by James Halliday" ★★★ The Guardian (George Hall)