I found the Mornington to be an exceptional value. The trade off is location versus time. It takes about 20-30 minutes to Central Stockholm, but you can save up to 75% (i.e. $60-65/night versus $150-200/night).
I took the Flybussen to the 1st stop Jarva Krog (you can also get off at the 2nd stop, Fronsunda). Both are along Bus route 176/177, which you take to the hotel. You get off at Voltavagen, about 8 stops (buses have visual display showing next stop). The hotel is across the street and to the right.
I booked an interior room (single bed), which does not have a window. They placed a curtain on one wall, which gave the illusion that there was a window. I would have preferred a window, not for the view, but for tempature control. There was no individual tempature control and I found the room a llittle warm. I did borrow a fan, which worked out fine.
The hotel is in an industrial area, so there is no nearby restaurants or stores. It seems that the hotel is booked with tourists on weekends, with more business people during weekdays. Breakfasts start @ 6:30 weekdays, and 7:30 weekends.
On the top floor, there is a Health Club (65 SEK charge) and a lounge, with one high speed Internet terminal. The hotel also has free WiFi (ask for a card with a logon and password for 8 hours). You can also rent (for a charge) a converter.
As other have mentioned, you need to take a bus to the Metro (T). There are 2 bus lines that intersect near the hotel (Voltavagen stop). Bus 176/177 is 3 stops from the Brommaplan station. Bus 110/112 is 9-10 stops from the Alvik station. Both are on the Green line, although the Alvik station is 3 stops closer to Central Stockholm. The 110/112 bus line is a commuter line with more buses during rush hours on weekdays.
Ironically, the closest Metro stop is actually at Vretren (Blue line), which is only 1 stop away on the 176/177 line (opposite direction). So why doesn't the hotel recommend this stop? Because it is not a convenient Metro stop.
Bus lines 110/112 terminates at the Alvik station. Bus line 176/177 stops at the Brommaplan station (and everyone gets off the bus). The Vreten Metro station is about 200 meters from the actual bus stop and is located in an industrial area. Once you are off the bus, you need to navagate a few streets in the industrial area.
As a side note, I would highly recommend taking a Brommaplan local map (at the front desk). Also you'll need a good Stockholm map showing all the Metro (T) stops. Unlike other cities, I didn't see directional signs in Stockholm (i.e. Alvik station - 2 blocks ahead or pointing to the right). You need a map showing where the stations are actually located.
I decided to walk to the Vreten station (about 1 km away) and foolishly didn't bring a map. I walked over bridge to the right of the hotel to the Vreten bus stop. However, there were no signs pointing to the Metro stop. After wandering around the area for a while, I finally asking for directions, I found the station, in the middle of group of low rise office buildings. To my dismay, I went on a Saturday, and the station was closed.
Both the Brommaplan and Alvik stations have a ICA grocery store (stays open to 10 pm).
Bottom Line - If you are willing to trade a little bit of time you can save a lot of money. I was at the Mornington hotel for 4 nights and believed I saved a lot.
