The closest hotels to the Palacio Municipal de Congresos (two minutes walk) are:
NOVOTEL MADRID CAMPO DE LAS NACIONES
The Novotel Madrid Campo de las Naciones is a four-star hotel. It has spacious rooms renovated in 2018 and has a restaurant and a bar with market cuisine.
PULLMAN MADRID AIRPORT & FERIA
The Pullman Madrid is a four-star hotel that is currently being renovated and that the project is scheduled to be completed in 2021. It has a large number of rooms in several categories; as well as restaurants.
Madrid has a wide range of hotels to suit all needs.
Following, you can find some recommendations