Having lived in Yokohama for three and half years I was very happy to come back for a long weekend. The Navios was perfectly located for my needs, close to Sakuragicho and Minatomirai stations and the Minatomirai district.
I arrived late in the evening but everything was ready for me when I checked in and I was quickly able to get to my room. The room wasn't large but it was easy enough to spread out and there was sufficient space for my things. There is no wireless internet but there are cables for a good broadband connection. The bed was comfortable and I slept well. The bathroom was small but had everything needed and a great shower.
As other reviewers have mentioned, I didn't eat at the hotel as there were plenty of good restaurants at World Porters next door but the Seaman's bar was friendly. The hotel laundry was also good value and easy to use.