Very nice hotel. Good rail service to all the hot spots of Tokyo. Staff were exceptionally nice - and spoke good English. I asked at reception where the nearest Starbucks was and they walked me there - a 5 minute walk - right up to the door. Now that's service!!
There's also a nice path along the river where you can have an early morning stroll along. Would stay here again next time in Tokyo.

We looked at getting a Disney hotel (or nearby, anyway) for a two day stay in Tokyo, and this appeared to be quite handy. As it turned out it cost about 1/3 the price of the resort hotels, and travel to & from Disneyland was no great problem from here. Caught the Kensei line, and after 4 stops we were at the front gate to the Disney Park. We could then see why the resort hotels could charge what they did, as the place was packed..school holidays in Japan are from 25th July to 31st August, so the "close" hotels are all full to the brim. We had no dramas getting around, either to the park (30 minutes) or into Tokyo proper (30 minutes) using the trains, which always run on time. The Dai-Ichi Hotel itself is in a fair location on the waterfront, with good views from the guest rooms (levels 23 - 26). Plenty of shops in the Seafort building to which the hotel is attached, and a great little Irish pub (the Roundstone), which is well worth a visit for some reasonably priced nosh and a few coldies (given it was summer when we were there..it was compulsory to get a few into us each day)

Can't fault the hotel, and for the price, is excellent value.

If you are new to Tokyo it's fairly essential that you can get to your hotel (from Narita) using the hotel limo bus services as other public transport can be a bit mind-blowing the first time you experience it. This is the only downside to the Dai-Ichi Seafort - the limo bus runs a limited number of times each day to this part of the city. But if the times work for your arrival departure flights it's perfect. (Having said that, if you are coming in on an internal flight from elsewhere in Japan it couldn't be better as it is located on the fast / frequent monorail service which comes from Haneda domestic airport.)

Rooms are a reasonable size, well equipped and spotlessly clean. Excellent value via Expedia at £55 (Pound Sterling) per room per night. All staff without exception were typically Japanese (i.e. efficient, friendly, helpful). Views from the rooms are great, especially if you are on the bay side of the building - looking at the Rainbow Bridge. The bar on the 28th floor is nice (although expensive) but doesn't have much better views than your room unless you are on the "wrong" side of the hotel.

The food court in the base of the tower block gives a great choice for places to eat - and even Guinness on tap in the Irish Pub!
Transport links are limited but once familiar with the ticket machines, getting into, and then about, the city is easy and EVERYONE we met was helpful. If you look like you are lost / confused someone will stop and ask if you need assistance.
Highly recommended.

My Wife and I have just returned from a trip to Japan inwhich we stayed at this hotel. I don,t usually write reviews, but felt that we had had such a wonderful time that I should pass our experience on to others. We went to Japan for the Sakura (Bloosoms) in April.
We stayed at this Hotel for 3 nights twice on our trip and found that we were made to feel very welcome. I must add that I do speak enough Japanese to get buy (well speaking, but not the reply part) which was enormously appreciated. We bought a JLR pass for 2 weeks as well in which this covers you for all transport on 99% of the trains. Have to pay separately for underground & Tokyo Monorail. JLR pass covers you for the Nartia Express from the airport. If you arrive at Narita. Get the Narita Express to Shinagawa and it is about a 15 minute walk to the Hotel. This may seem a bit out of the way, but once you get your bearings it is a 4 minute monorail from Tennosz Isle to Hamamatsucho on the Tokyo Monorail at 190 Yen a single. This is a short walk to Daimon which is on the Asakusa line which will help you get anywhere or the Green Yamamote line if you have the JLR will take you to some destinations. We purchased a Passnet card at 3000 Yen (£15) and this lasted us all 6 nights as we had the JLR pass as well.
We ordered a double room
We would strongly encourage anyone to stay at this hotel as our room was large, clean and we had no problems.