I think Tatarskaya Usadba is a fine, inexpensive restaurant with an excellent bar list. It's not on Baumann, but not far. (The big, more expensive Tatar restaurant on Baumann is not good, despite all the advertising.)

I was there last summer and really safe city including center. I suggest you to stay in the center. You can use busses at the city and they are easy use and safe. Cash is accpted at the bus. You will have only problem in language. there are very few people speak english. Do not use very local restaurants, they are cheap but testles beside that there are many good restaurant around with reasonable price. definetly cheaper than many European spoths. There are a lots of nice beer to try :-)

Вопрос не ко мне, а к неизвестному мне Роману. Если речь идет о будке с котом, то это прямо на улице, где-то посередине. Не промахнетесь в любом случае, когда будете гулять.