KEY’S CAFE, Akasaka: A 520-Yen Morning Set Inside a Capsule Hotel

A note on the words: a morning set (or moningu) in Japan is a cafe breakfast special that bundles coffee with toast or a hot dog, often alongside a boiled egg and a small salad. An antenna shop is a showcase store run by a regional prefecture to promote and sell its local specialties in Tokyo.

KEY’S CAFE

KEY’SCAFE Akasaka ten on Tabelog (English) — opening hours, payment details and the Japanese address are kept up to date there, not here.

Hello, this is Hangover Meshi. Part of my search-for-breakfast-in-Akasaka series. I had heard there was a cafe near the Aomori antenna shop (a prefectural showcase store) serving morning sets, so I decided to check it out. I wondered if it was some kind of Aomori-themed cafe, but when I got there, while it was indeed next to the Aomori antenna shop, it was actually a cafe inside a sleek capsule hotel called First Cabin Akasaka. You can enter via the outside stairs, or take the stairs or elevator up from inside. More accurately, it feels like a cafe space right in front of the front desk.

KEY'S CAFE

Well, in any case, having a morning set available is much appreciated! Going inside, there were a few groups here and there — perhaps hotel guests? The setup is that you order at the counter, and they bring it to your table while you wait.

Dishes to look for

Thick-cut toast set — 420 yen

Plain hot dog set — 520 yen

Soufflé pancake set — 520 yen

KEY'S CAFE

Hmm, toast sounded fine too, but I chose the plain hot dog set. It is great that all come with a drink and a boiled egg. For the drink, I went with iced coffee.

Plain hot dog set

Plain hot dog set (520 yen)

Plain hot dog set (520 yen)

First, the salad and coffee arrived.
The coffee was an iced coffee with a fairly pronounced acidity. Good. The salad had French dressing.

Plain hot dog set (520 yen)

And then the hot dog appeared. The moment it arrived I squirted ketchup on it, ha.
Taking a bite, the outside was toasted crisp and tasty. Well, it was good, but it is just a simple hot dog with a sausage tucked in a bun. And with this comes the boiled egg. It had been momentarily forgotten, but when I asked, “There’s an egg included, right?”, they brought it over.

Plain hot dog set (520 yen)

It was a neatly cooked boiled egg and easy to peel. When you make them at home, they sometimes end up all crumbly and torn. I wonder how they do it.

16 places open for breakfast in Akasaka and Akasaka-mitsuke: both hidden gems and chains!

【2026年9月更新】赤坂・赤坂見附のモーニング・朝ごはん16選|650円の喫茶店モーニングから朝そば・24時間営業まで実食

Thank you for the meal!

So, getting a salad, boiled egg, coffee, and hot dog for 520 yen is quite cheap. Perfect for breakfast. Plus, being inside a hotel, it is cool, clean, and comfortable, and there are not many overnight guests on weekdays, so it might be quite a nice hidden gem. This place is surprisingly viable. It is a rare find for breakfast in Akasaka, making this a valuable option, so I recommend it!

KEY’SCAFE Akasaka ten (Cafe / Akasaka Station, Tameike-sanno Station, Akasaka-mitsuke Station)
Tabelog lunch rating ★★★☆☆ 3.2

I ate here and paid for it myself. Nothing on this site is a comped meal.