They don't exactly have mobile check in. Sometimes (not always) you will get an email a day before arrival inviting you to do online checkin, but you still have to stop at the desk to get room keys (there is a separate shorter line for that) So keep an eye out for the email.
I have not heard of the rooms being refurbished.
No clue about the pool, but in a busy time at the height of the summer I would hope so. Maybe someone who has been there recently will chime in. Or try the dedicated CB thread above.