There are a good choice of hotels nearby ESA ESTEC . The list below gives several examples of places to stay in towns near the conference venue including Noordwijk, Leiden and Sassenheim.

Alexander Hotel  –
Fletcher Badhotel  –
Golden Tulip Noordwijk Beach –
Grand Hotel Huis Ter Duin –
Hotel Golfzicht  –
Hotel Royal  –
NH Noordwijk Conference Centre Leeuwenhorst  –
Prominent Inn –
Van Der Valk Palace Noordwijk (previously Radisson Blu Palace Hotel) –

Golden Tulip Leiden Centre –
Hilton Garden Inn Leiden  –
Ibis Leiden Centre –
Tulip Inn Leiden Centre  –

Van der Valk Sassenheim –