Salaah

Is it permissible to perform Esha salaah in a house where one will be performing taraweeh?

Q: I have been offered by my uncle to perform taraweeh salaah with two cousins of mine at his house. His house is between a musjid and a jamaat khana and is 650m from both. I wanted to find out if we are performing taraweeh there, can we perform the esha salaah there as well or not? 

Mistakenly reciting a surah instead of attahiyyaat

Q: Is Salaat valid in the following cases? If so, please advise what should be done if such an error occurs in the Salaat.

1. Mistakenly reciting thana twice.

2. Mistakenly reciting some Ayaats of a Surah, or an entire Surah, instead of tashahhud. Tashahhud is then recited after the mistake is  realized.

3. Mistakenly reciting some part of tashahhud, or the entire tashahhud, instead of Surah Fatiha. Surah Fatihah is then recited after the mistake is realized.

Watn-e-asli

Q: I moved to a city for studies (a 7 year program) but never made the intention to move there permanently. During the course of the studies I got married in the city. From then on I considered the city to be my (second) Watan al-Asli, since I thought that it automatically became my Watan al-Asli since it is my wife's Watan al-Asli, although I still had the intention to move back to my original home after the end of my studies (together with my wife). Is this correct? I.e. is it my Watan Asli due to it being my wife's watan asli, or is it not since I never intended to settle neither myself nor my wife there? If so, will it still be my wife's watan al-asli even though she intends to move away with me from the city after I finished my studies?