Edwin Lindsey
Google
The rooms are a bit overpriced for the size and amenities compared to hotels in the area. The restaurant is overcrowded and understaffed and the selection is mediocre - not as good as the neighboring Intercontinental Grand, for instance. The rest area/arcade could use a lot more seating.
However, when you combine each of these parts, with the location of this place, it's really quite difficult to find a better place to stay in Yokohama for the price range. The sheer convenience of being able to go from room to onsen to restaurant without leaving the building or even changing out of your pajamas cannot be matched. Meanwhile the place is right on the oceanside next door to a bunch of places you'd want to see in Yokohama.
There's not much of a view from the onsen unfortunately. However the building features both an outdoor terrace lounge area and a rooftop lounge with foot bath and 360 degree views so you can get a spectacular view from there. On a clear day you can see much of Tokyo, it's really quite something. Highly recommended for couples.
You can access pretty much all of the building without being an overnight guest - private rooms are available for a fee for a limited time, like a love hotel, and the lounge areas are accessible even with only an onsen pass. It's set up like a standard super sento - get your wristband at the entrance, change and put all your stuff in the locker, pay when you leave. You don't need to bring anything, all amenities are provided.
One last thing: I have stayed at many ryokans and super sentos and other places where Western-style pajamas are provided, and this place had by far the most comfortable I have ever worn.