InterContinental Barcelona: beautifully renovated hotel, with great service, pleasant club lounge and outdoor pool. Parfect for visiting Montjuic and El Poble Sec district (dont miss the superb Laribal gardens (10 minutes walk from the hotel), Miró foundation, CaixaForum and Mies Van Der Rohe Pavilion.
Kimpton Vividora Barcelona: very pleasant design hotel with smiling service, very good breakfast and pleasant (small) rooftop pool. The hotel is located in the historical Gothic district, at walking distance to cathedral, Port Vell, Macba, Passeig de Grącia.
Both hotels are very pleasant.
Your choice may depend on how long you stay, if it is your first time in Barcelona, your IHG One Rewards status (lounge access) and how you want to visit the city (walking, bike, public transport, taxi).