Get element query in LINQ

<HotelProduct PricingSource="System" InventorySource="System" ExternalDetailsObtained="false" Code="IAI06" Category="4R" InstantPurchase="false">
 <Description>Deluxe Guest Room</Description>
 <Supplier Type="Hotel" Code="LIAIS" City="WAS"/>
<InventoryDetails Status="Available">
<ExtendedInventoryDetails MaximumAvailable="3">
 <InventoryProduct Code="IAI06" City="WAS"/>
 </ExtendedInventoryDetails>
 </InventoryDetails>
 <PriceDetails PricingDuration="5" Price="765.00" IncludesBonusNights="false"/>
<DescriptiveItineraryText>
 <Text Heading="true">Check In: 3:00 pm</Text>
 <Text/>
 <Text>Hotel is situated in the heart of the capital city the hotel is</Text>
 <Text>close to all of the city's major attractions. Centrally located</Text>
 <Text>on New Jersey Avenue close to nearby dining and shopping.</Text>
 </DescriptiveItineraryText>
 <DurationDetails MinimumDuration="1" MaximumDuration="99"/>
<DateBands>
<DateBand EffectiveToDate="2012-11-26" EffectiveFromDate="2012-11-16">
 <Applicability SplitRates="true" BaseRates="false"/>
 <CheckOutDetails StandardCheckOutTime="12:00:00"/>
<MealOptions>
<MealOption Code="0">
 <Description>No Meals Included</Description>
 </MealOption>
 </MealOptions>
 </DateBand>
<DateBand EffectiveToDate="2013-02-10" EffectiveFromDate="2012-11-27">
 <Applicability SplitRates="true" BaseRates="false"/>
 <CheckOutDetails StandardCheckOutTime="12:00:00"/>
 </DateBand>
<DateBand EffectiveToDate="2013-02-25" EffectiveFromDate="2013-02-11">
 <Applicability SplitRates="true" BaseRates="false"/>
 <CheckOutDetails StandardCheckOutTime="12:00:00"/>
 </DateBand>
<DateBand EffectiveToDate="2013-02-27" EffectiveFromDate="2013-02-26">
 <Applicability SplitRates="true" BaseRates="false"/>
 <CheckOutDetails StandardCheckOutTime="12:00:00"/>
 </DateBand>
<DateBand EffectiveToDate="2013-03-17" EffectiveFromDate="2013-02-28">
 <Applicability SplitRates="true" BaseRates="false"/>
 <CheckOutDetails StandardCheckOutTime="12:00:00"/>
 </DateBand>
 </DateBands>
 </HotelProduct>

IEnumerable<string> textSegs = from seg in _hotel.Descendants("DescriptiveItineraryText")
from text in seg.Descendants("Text")
select (string)text;

string str = textSegs.Aggregate(new StringBuilder(), (sb, i) => sb.Append(i), sp => sp.ToString());