As some other had commented, this hotel location is pretty good for business travel especially your business activities are around the Odaiba(Tokyo Big Sight) , or around Shinagawa area. Typically what I do is to take the Narita Express from the airport to the Shinagawa station, and then walk outside to the taxi line for a quick taxi ride of about $9 USD to the hotel. Just say to the taxi driver "Hote-ru SunRou-to Shinagawa Seaside des". Yes it's my broken Japanese but does the trick every time, or just print out the hotel map from the website.
The room is small, and one may even say it's tiny but this is typical of room size in business hotels in Japan. It came with a LCD TV/monitor, free wifi, a double bed, and even a massage chair which is basically a chair with no legs but can vibrate a bit, pretty useless IMO. The modular, molded one piece bathroom came with a toilet that has "shower" functions. The real shower is pretty decent with enough hot water and pressure. Shampoo/conditioner/body soap are of good quality products. The double bed is decent and provided good sleep quality.
Check-in lobby area has 2 PCs for guests to use. The front desk can communicate in English and they used to give guests a Japanese energy drink upon check-in but no more. Corporate cutback I guess and it's too bad because I thought that was a really nice touch (and memorable feature) from the hotel to give the just arrived (and presumably exhausted) guests some drinks. The view out of the lobby (hotel starts in the 18th floor I think) is also pretty impressive, as one can see the Tokyo bay and harbor area, lots of Shinkansen trains coming in/out of train yard, and also planes coming into or out of Haneda airport. Also a good look at the monorail line to Haneda.
The restaurant provided breakfast with both western and Japanese style dishes. Tried the hotpot "shabu-shabu" dinner once and was pretty good quality also.
Overall, it's a good value business hotel in an expensive city like Tokyo.

I always stay here when I go on business trip because my company has the contract with this place. But I would not choose to stay if I go on vacation. The reason-1 it's inconvenient to get there from Tokyo-Narita international airport. No direct airport bus. 2-it's also inconvenient to get there from Tokyo-Haneda domestic airport. There is direct bus but it's only 1 or 2 per hour. 3-if you use airport monorail, you will have to switch to another train and if you carry a big luggage, it's a PAIN. 4-the price is fairy high for the room size. 5-breakfast has limited selection for the Americans. 6-the room is too warm and cannot control below the pre-set temp. (I think they set 73F as min temp. You cannot open the window so the room stayed too warm for me) 7-you will have to remember to grab their free toothbrush, hair brush, razor. They don't supply them in your room like the other hotels in Japan do. No shower cap. 8-the bed was too hard! I always feel like I am sleeping on the floor. The two good thing about this place are; 1- you can shop near by Jusco (sort of like Walmart in Japan) until midnight. It's a min walk fro the hotel. 2-there is a PC (Internet) in your room for free of charge.