In the past five years I've spent a lot of time in Yokohama and Hotel MyStays Kannai has been a second home. I've spent a total of months in the same room.
Location is fantastic, near Kannai and Bashamichi stations. Many great restaurants within walking distance.
Service is extremely good. I can speak basic Japanese and my wife is Japanese but they have a professional English speaking member as well.
Our queen bed was extremely spacious.
Room layout is good and I could do my WFH as "work from hotel" easily.
The restaurant on the first floor of the hotel, Granduca, is extremely good. I wish I had tried it sooner but we've gone back several times for dinner.
The shower pressure is pretty good as is the bathroom generally.
Free to use onsite laundry facilities, as well as an ice machine, cups, and utensils available at no cost.
Refrigerator in the room is spacious and easily accessible.
Room has a basic safe that's roomy and easy to use.
WiFi in the room is pretty good but I always bring my own data service just in case for work.
Room climate control /AC is pretty good.
Room service is very good and easy to skip service on some days and instead just get new towels, trash pickup, etc.
Overall, my favorite hotel in the area for quality and cost.