The following three hotels are at less than 15 min walking from the conference venue, and at 1 min walking from the beach and the conference dinner restaurant:
Hotel Villa Ombrosa***: 24 rooms, Viale De Gasperi, 9
Single room or double room used as single room: 65€ per person per night
Double room: 42€ per person per night
Triple and 4-people room: 35€ per person per night
Hotel Crystal****: 20 rooms, Via Cairoli, 15
Single room or double room used as single room: 60€ per person per night
Double room: 45€ per person per night
Triple: 40€ per person per night
Four-people room: 37.5€ per person per night
Hotel Le Ghiaie***: 7 rooms, Viale De Gasperi, 4, through Booking.com
The following hotel is a 3-min walk from the conference venue, and less than 15 min from the beach and the conference dinner restaurant:
Hotel Ape Elbana**: 24 rooms, Salita de Medici
Furthermore, there is a large choice of B&Bs and other accommodation options in Portoferraio. September is still summer holiday time in Portoferraio so we strongly suggest to reserve a room in advance (absolutely before June). When booking, mention the ERB conference.
For other suggestions of accommodation in the surroundings check Booking (website), Tripadvisor or AirBnB