I stayed at the Marriott a couple of years ago. It is very convenient to major tram lines and you can walk to museums such as the Rijks. Very nice hotel but this was just before the pandemic. I am uncertain if Marriott has reopened its executive lounge there. It does not look as if they have done so at the airport Sheraton. I am headed to AMS in a couple of weeks but I am staying at the Hilton at the airport which is also a lovely hotel. Train ride into Amsterdam central is short.