Travel is the (usually) uncountable noun for the general experience of moving around;
trip is a particular countable instance of
travel:
I love travel-- my next trip is to Botswana.
A
sightseeing tour can be done alone or with friends or on a
package tour, which is an arranged group tour including transportation and accommodation and some meals (the 'package').
The
hotels' prices or
the hotel prices. The first is plural possessive and the latter is the noun as adjective. Since hotels are not sentient, I recommend
the hotel prices.