Transferring funds to Monzo account from foreign bank account

I was looking for some advice on the suitability of Monzo for my situation.

I’m moving back to the UK after six years of living in the U.S. I would like to hit the ground running when I get back so would be good to have a UK account setup. I am wondering if Monzo may be a solution to this. I tried Googling, but my Google-fu may be weak today and I couldn’t seem to find concrete answers. So, questions…

How easy is it to transfer money from a US bank account to a Monzo account? What are the fees like etc.? What’s the transfer time like?

Monzo doesn’t have an IBAN, but you can use a money transfer service (like TransferWise for example). You will also need a U.K. address for your card to be sent to.