## 1 Introduction
In this line, [PERSON] and [PERSON] [20] state that, in the evaluation of tourism administration, too much importance has been given to easily quantifiable indicators; that is to say, the aims of investment, inflation, etc. However, these indicators must be complemented with indicators that are more difficult to quantify, in other words subjective, to discover the perceptions and satisfaction of the local population and of the tourists as internal and external customers, respectively, of the tourism administration. This is even more important given that the results of both types of indicators may not coincide. Specifically, the support of the residents of the destination is essential, as a hospitable local population is a critical factor for the tourism development; the residents influence the satisfaction of the tourist [21]. Hence, if the planners wish to be successful in any tourism project, it is essential to identify and understand the factors which influence the support of the host community [22]. In line with what has been stated, the WTO [13] made it known that the residents' assessment of the different impacts of tourism and their satisfaction are fundamental for the sustainability of tourism. In extreme cases, the hostility of the local population has alienated tourists. Therefore, it suggests the use of questionnaires targeting the residents which are repeated annually to compare the results of two or more similar communities of the same destination and carry out time comparisons. These questionnaires are of great importance as the host community's groups of individuals may have different opinions about what is positive or negative for them. Consequently, these subjective indicators are basic indicators for the Public Tourism Administration as they serve as an alert. That is to say, they are a key tool for control in this administration, as they permit the planning of corrective measures when a negative effect is identified. Moreover, they reflect the citizens' assessment of the administration, which is important as the residents are its internal customers. Lastly, although much of the literature shows studies with different indicators, these used to focus on only one of its impacts [23], and mainly on the environmental impact, because of the origin of the term \"sustainable development\" and the environmental degradation and excessive consumption of natural resources as consequences of tourism [9; 24]. Another reason can also be found in the lack of consensus on the meaning of \"sustainability\" [15; 25]. However, in recent times tourism has caused other socio-economic problems, so studies on the subject have evolved in recent years [24]. Due to the growing consensus for the need to include social value in public tender [5], it is necessary to include socio-cultural indicators in tourism assessment. As the WTO again specifically indicates [13], in all the forms of tourism and all kinds of destinations, an appropriate balance must be found between the three main dimensions already commented on to attain long-term sustainability. Some studies also include the institutional, political, technological dimensions, and others that are specific to the concrete approach that they study [9; 15; 24]. The aim of our research has been to analyze the perceptions of environmental, economic, and social impacts of tourism by residents of the destination town, their satisfaction with the Public Administration of Tourism and the cause-effect relationship between them. Assessing the responses from 447 residents in the city of Seville (Spain) and due to the importance of resident's behavior as an integral part of the tourism product, we have attempted to meet a further objective that is to support Public Administration in Tourism Planning. The paper attempts to answer a series of questions expressed in previous researches:  
1. Tourism may become a threat if it is not managed, and satisfaction of the needs of tourists and current and future residents should be considered key aspects in strategic tourism planning [12; 26].