Hotel was in a slightly dodgy area, but was an easy walk from the Naples train station. We had a fairly nice room with a double bed, room had a bar fridge, and a relatively new shower. The shower itself was tiny and a little difficult (strange showerhead), but other than that we happy with our stay. There was some street noise, but that is Naples for you.
I really enjoyed my stay. The hotel is in a great location particularly for trains round the bay of Naples with the Circumvesuviana terminus beung only 100m away. I was on the top floor and it was perfectly quiet up there I had heard it was in a red-light district but even walking back fairly late at night I saw no such thing.
Hotel Colombo offers an excellent relationship between price and quality, very friendly, helpful and welcoming staff and a good location for exploring the center of Naples. For people sensitive to noise, the surroundings of the hotel are probably too noisy, otherwise the hotel is very recommendable considering the prices and the quality it offers.
As long as you are clear what you are getting then the hotel is fine. The guy on desk when I arrived spoke reasonable English and was very helpful but at other times the staff were less so. So I was quite lucky. The room was a bit cramped but on the other hand, I booked a single and it WAS a double bed, just a slightly cramped room.
Bear in mind Naples is a lively, noisy grubby place with lots of street life. The hotel is near the station with all that that entails in any big city. But it is very close to the railway lines, restaurants.
I found the noise level was fine, even with the windows open.
If you are a young traveller like me out to see the sights, then this is well located and good value. If you are prissy or elderly or looking for a refined holiday you ought to be looking in a different area.
I'd book it again.