Elwin has three apartments ( I think ) in this tower and 773 is definitely the one to have as it is a corner apartment so it's large and has a great view over the city. The Haagse Toren - the tower this apartment is in - is modeled after the FlatIron building in New York. The Dutch local name for the building is a literal translation of that - the StrijkIjzer. It's 5 minutes from one of the two big rail stations - Hollandse Spoor, so convenience for train and tram travel is brilliant. There's also a number 15 tram that stops right outside the building. The apartment is vast and clean and comes with a large separate bedroom (the other two apartments have combined bedroom / living areas). The bedroom has an en-suite bathroom. The kitchen has a regular oven, fridge, washer and drier, and a dishwasher. The furniture is modern and minimalist and there's a huge, comfy sofa opposite a large TV. There's free WiFi which, for whatever reason, is strongest in the kitchen. Being on the 39th floor, it's quiet - even with the conference center one floor above you, there's no noise transfer through the ceiling. The building uses a series of keyed entrances both to the lobby and the floors where the apartments are, so security isn't a concern. The photos on airbnb don't do the place justice - you'll walk in and just say 'wow'.
I did have the chance to meet Elwin and he is kind and congenial.
This apartment is on my shortlist for trips to the Hague - for the price you just can't beat the convenience, location and views.