Front desk staff was the epitome of Japanese hospitality, and sufficiently fluent in English. They provided us with very good tourist maps of Tokyo and a diagram of the local Akasaka area to help us find restaurants.
The other reviews cover it pretty well. Small clean rooms, very modern with a great multi-head shower and the multi-function bidet toilet seats common in many Japanese hotels. The elevators are the smallest I've ever seen, feel like the size of a coffin - not for the claustrophobic.
The location is a block or two off the main streets, but across from the TBS (Tokyo Broadcasting System) Television building, which is a major local landmark. I set a pushpin for it's exact location on Live Search Maps at http://maps.live.com/?v=2&cid=3811AE823B249B0E!322. It's about 300 meters walk from the subway stop to the hotel.

I'm here right now. It's nice, clean, relatively central, just about big enough (in my single room) & most importantly cheap.

If you're thinking of booking here, I'd advise you to at least look into "Shibuya Granbell", a hotel of similar cost and proportions (seemingly not listed on tripadvisor), only a bit trendier and slap bang in Shibuya. I think it would be a bit better for the party-going 20-somethings like myself, but the B would surely be better for those a bit older or after a more relaxed time.

I read some reviews stating it was hard to get to the b from the stations. Not so at all. There is one super-quick unofficial route (presumably not listed as you have to cut through a nursery.

Exit at Akasaka gate 7, take a right until you see some 'n' shaped metallic barriers, go up the flight of stairs past the weird cat-umbrella village, you'll see the b.

I'd say to improve, some form or wardrobe storage would be v.useful as I have had to open and close my case every time i have wanted anything, otherwise there is no space to stand. Under-bed storage would be a benefit too & the breakfasts could be a couple-hundred yen cheaper, or free as standard, other than that - can't complain.

Pretty good place. The rooms were bigger than I was expecting given all the hype about tiny rooms in Tokyo. The bathroom was large enough, but it was built fishtank style with frosted glass up to about eye height, meaning you can see in from the room. It doesn't pay to be shy.

As far as location goes it was pretty good. There are hundreds of restaurants just around the corner and the Akasaka Metro station is only a couple of 100 metres away, except that line isn't all that useful so to get anywhere you generally have to make two or three changes. I did two trips to Narita airport and averaged two hours per trip (using the Narita Express from Tokyo station).

The staff are friendly, just watch out for the PC in the lobby, the keyboard kept changing back and forth from English to Japanese script, quite confusing until I figured out what I was doing wrong!

After staying with friends in Tokyo we had to spend one nght in a hotel. We wanted somewhere nice, central and inexpensive. Having read the reviews we opted for B Akasaka. It fitted the bill perfectly. Akasaka, primarily a nightlife area, is in the heart of Tokyo. The hotel, in a quiet office cum residential part of Akasaka, is only 5 minutes walk from a subway station, restaurants and bars. It is a renovated business hotel which now looks boutique like. Ambient lighting in the lobby etc. The rooms are small but comfortable and a bit chic. The compact bathroom was quite cool. We didn't need a wardrobe or drawers, which is just as well as there weren't any! This really is a place for a short stay. Service at check-in was typically friendly. At Yen 20,000 for a double room this was good value for the centre of Tokyo. A bit of advice: as the hotel is at the top of short but steep hill don't arrive by subway if you have baggage. But we walked down to the station when we left - it takes under half an hour from the hotel via the subway to Tokyo City Air Terminal, from where you can catch a coach to Narita airport.