I stayed at the "Tapto" (Tattoo in English) for 3 days in Sep 06 while on business. This was my first trip to Stockholm and found the front desk folks extremely helpful in figuring out what bus/subway to ride to go downtown, etc. My room was fine, it faced the street and unfortunately there is a major contruction project going on next door, so I heard a lot of trucks, etc passing by on the street below. The good thing is the Hotel is located in a residental neighborhood and this traffic will not be permanent.
The hotel has free Wi-FI, you have to get an access code from the front desk each day you want to use it.
The breakfast buffet was fine, I didn't eat at night at the restaurant.
Within a block of the hotel there is a grocery store and within 5 minutes, you can be at a subway station/bus stop which allows access to the excellent city transport system. I paid 20 Kronor (a little less than $3 US) for each trip downtown and had no problem.
My daily rate was about $145 US which was well within mycompany's per diem. Bottom line, nice place, very friendly employees and I would recommend it to business travelers.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC