This is a really nice apartment in a fantastic location. Really, the winner here is the location. It's a block from the metro and the tram, so you can get most places in the city incredibly easily, including de Pijp>Zuid>Schiphol in less than half an hour. Plus the FOOD in the area. Our number 1 pick for walkable restaurants is Mana Mana. We ate there twice in our two weeks in Amsterdam we liked it so much. Another tip for food are the breakfast bowls at Coffee & Coconuts, coffee at Scandinavian Embassy, and wine at Wijnbar Paulus, all within a five minute walk and each really lovely in their own way. Kind of hard to go wrong with food in the area, though. Also, there's a great laundry service nearby – Center Wash – which got our stuff done for pretty cheap in just two hours and came out well. Major museums like Rijks and Van Gogh are also easily walkable or tram-able.
Other notes on the apartment itself: it's not huge, but you can't expect anything else in the location. The bed is comfortable enough. The shower is pretty decent. There's a space heater that works really well for cooler nights. There is no microwave. Despite being so close to major transportation, it was never loud at night, nor was the area rowdy by any means. If that's what you're after, again, it's an easy metro ride downtown. I'd definitely recommend Juul and Ruub's place!