Me and my girlfriend stayed at Richards apartment for 2 nights. We found it perfect for a weekend getaway. The apartment is perfectly located as you can reach all of the main attractions in central Amsterdam within 25 minutes on the tram. With the tram/night bus stopping basically right outside - no need to catch a taxi after a night out in Amsterdam.
The bed was the highlight as it was extremely comfortable - would definitely recommend Richard's apartment to anyone travelling to Amsterdam.