The Nell Ueno Okachimachi

The jacuzzi was great.

The price is virtually unbeatable. Ueno Station is a five minute walk away, which is not only a portal to the rest of Tokyo, but also where the Keisei Skyliner runs directly to Narita Airport. Akihabara is fifteen minute walk away. Ameyoko is right down the street. Countless bars and restaurants in short walking distance. The location is extremely convenient. The staff is very nice.

The beds are a bit hard. The shower/sauna have limited hours. Not ideal for more than one or two nights, or if you're traveling with a group. It's a good place to sleep when you're not out and about, but not like standard hotel rooms where you can relax and unwind. This isn't a negative point necessarily, but the staff has very limited English. You'd do best to know some basic Japanese. You could get by without it, but it absolutely made interacting with the staff easier for me.