Sergio is very helpful and although we did not need him at any point during the stay we knew we could contact him if we had any problems. Stayed on a very hot Autumn weekend (3 nights) with my husband and air conditioning was a benefit. Apartment is lovely with stocked kitchen amenities which is handy for a coffee/ tea when you first wake up. Fluffy towels, hairdryer, shampoo and shower gel also help with the packing so thanks for providing these. Amazing comfortable central apartment which is virtually next to the Sofia Art Gallery. Walking distance to all other central locations. We only needed to use the metro once. Great links from the airport on the 203 bus to Atocha station which is then only a 10 minute walk to the apartment.