We stayed for 3 days at Harold's and it was really worth!! We are a family with 3 kids aged 10, 9 and 6 and they loved the stay.
5 min walk from main Hot Spots, with close supermarkets, and a really super nice apartment. We were surprised for the big main room (no noticed in the pictures, with full indoor bathroom).
Just one advice: better more small bags than supersized suitcases, due to the stairs.