I have been using the Cashu address for more than two weeks now, here is my review 🥜⚡️
Features
  • private by default
  • no sign-up
Downside
  • no notifications
  • need to redeem the sats manually
  • no detailed transactions ( or it's a feature...)
Generally it's nice, and it changed from cashu.com to npub.cash since they got a new domain, but old users who bought the cashu.com Address are free to claim the npub.cash address too. ( so now I own both natalia@cashu.com and natalia@npub.cash )
I use it for Nostr atm, and once the zaps reach certain amounts, you can either redeem it over Cashu or LN - I usually choose LN, it would overcharge you some fee at first, then you claim the leftover with Cashu.
And anyone can have it 🥜 Yours is <your_npub>@npub.cash 🥜, but if you want to have a human-readable address, you can get one with 5k sats.