Great location, 3 blocks from Nationaltheatret train station, close to both Karl Johan and the waterfront ferry terminals. Room was small but clean. As often the case in these hotels the walk-in shower allows water to escape to the bathroom floor, but an easy mop-up afterward. Mattress was a bit too soft for my comfort as I prefer firm; my spouse thought ok. Splendid breakfast buffet as typical for Thon, but no onsite restaurant or bar if that's important to you. Other guests have complained about funky floor plan, but it's not complicated; there are simply two wings that connect only on the second floor. American guests should be aware that rooms are not air conditioned (AC is not common in any hotel in Norway); our room was stuffy when we arrived in July, but once the air had been circulating for awhile it cooled to a comfortable temperature. Our room window opened to the interior atrium, so outside air was not available, but upside was that there was virtually no exterior street noise. We have also stayed at the Thon Hotel Opera in Oslo, which is a little more upscale and has bar/restaurant, but is also a bit more pricey; it's adjacent to the Central Station. We'd stay at either again, but I favor this one's location for easy walking access to many tourist destinations including Bygdøy via the ferry, if you don't mind dragging your bags a couple of blocks. Tip: skip the airport Flytoget and use the regional trains; half the price and the same travel time.