The detail of “Other Operating Expenses” of the consolidated statement of comprehensive income for 2018 and 2017 is as follows:

In 2018, the Group experienced a higher level of activity in its hotel business, which led to an increase in some operational expenses directly related to the level of activity, such as the outsourcing of certain services, maintenance and cleaning of the hotels and laundry service, among others. Also, the increase recorded in revenue per available room explains the increase in associated agency commission expenses.

During 2018 and 2017, the fees for account auditing and other services provided by the auditor of the Group’s consolidated annual accounts, Deloitte, S.L., and the fees for services invoiced by the entities related to it by control, shared ownership or management, were as follows:

Additionally, entities associated with the Deloitte international network have invoiced the Group for the following services:

During 2018, other auditing firms apart from Deloitte, S.L. or entities associated with this company by control, shared ownership or management, have provided account auditing services to the companies making up the Group, for fees totalling 66 thousand euros (83 thousand euros in 2017). The fees accrued in 2018 by these firms for tax advice services were 209 thousand euros (125 thousand euros in 2017) and for other services, 396 thousand euros (443 thousand euros in 2017