Just spent a few days in Amsterdam and stayed at the Oscar. The hotel was great. Right on a canal in a very active area and within a block from shopping, restaurants, bars etc, The hotel is clean and very well kept. The staff are friendly and very helpful. It is about a 30-35 minute (70 Euro Uber) ride from Schiphol airport.
If/when we get back to Amsterdam we will definitely stay at the Hotel Oscar again. I highly recommend it.