The PlayStation Portal is a serviceable option for handheld PS5 streaming. Just don't expect more than the bare minimum.
PlayStation Portal reviews: Great for some, but not for everyone
Sony PlayStation Portal Review
Mooroer Case Compatible with Sony Playstation Portal, PS5 Portal Protective Case with Comfortable Ergonomic Grip & 6 Thumb Stick Caps, Playstation Portal Accessories : Video Games
PlayStation Portal review: streaming handheld cuts corners
PlayStation Portal review: streaming handheld cuts corners
PlayStation Portal review round-up: Is Sony's new handheld worth buying?
PlayStation Portal review: impressive hardware but is Remote Play itself good enough?
PlayStation Portal Review - IGN
PlayStation Portal review: A baffling handheld for no one but Sony diehards
PlayStation Portal review: weird but comfortable PS5 remote play - Video Games on Sports Illustrated
Sony PlayStation Portal review: flawed but fun - The Verge