it's a "weekend" hotel deffo, in the couples sense! 😉
i spent 4 years in brighton, love the place and the vibe..
(no i'm not gay before some smart sod chimes in!)
the town hall is amazing (it's a palace)
"the lanes" are bohemian and fun packed with great shops (make sure you go to both sides!! most people don't).
Go to the marina, as you come to an roundabout at the bottom take a right then look for some steps on the left almost behind the petrol station, this leads to the floating pergola. a lovely and fun floating Chinese restaurant in the bay.
take a little time out and go to the preston park just near the a23 (you will pass it if you come in on the M23/a23).
obviously walk along the beach, the stalls and people are good too.